I'll skip some of this. What I think you're getting at is hypocracy is bad and honesty is good. Yes, and yes.
Are there dishonest portrayals of Christianity/Christians? Yes.
In another post on another thread I described Jesus letters to the Seven Churches in Asia Minor. Jesus didn't cover over the sins, he exposed them. But if you look at the way he did, he praised what they did right. What they did right- always first- what they did wrong- second- what they needed to change- third- his hope for them- fourth. That balance helps us see he loved them despite their flaws, but didn't tollerate the flaws.
And if we follow this pattern, we should look for what people are doing right, and not only wrong. We should have a redemptive approach, meaning, not simply telling people they are wrong, but with the purpose of helping them get it right.
Paul referred to being in "Labor" until Christ was formed in the hearts of some Christians, indicating their immaturity caused him distress and loss of sleep. But he kept focus. And if you look at the letters they weren't hammers, though some verses were very tough.
In some ways you have to look at "What is the true church" as God sees it. And some people in pews answering forms might not fit that model. Some people are at a variety of stages of maturity and immaturity like the churches Paul addressed. There are entirely "Carnal" churches now as there were then, and particularly in some parts of the world.
Again, look at the churches of Asia minor. In them Jesus addressed all the basic components of the kinds of problems they'd face. In fact, if you take every church listed there, and take any church you find, it will be like one of these seven churches- pure or morally impure- you will find both. Mature or immature- you will find both. Doctrinally okay but indifferent and cold, or fairly good motivation and absolute doctrinal heresy.
You will find lukewarm churches- fence riders who are not too spiritual, but not entirely unspiritual. Jesus hates this, doesn't tollerate this, but it exists.
In reality if you look close enough throughout the world you will find very good Christians who are doing the kind and loving things they should do, who are not greedy, immoral, or harshly judgmental. But you will find Christians who are all of the above. No generalization fits.
Paul said something profound, "If anyone thinks he knows something, he knows not yet as he ought...knowledge puffs up...love edifies." In other words we can think we see clearly on a given issue "meat offered to idols"- An arrogant view is - I'm smarter and can figure this out, and other Christians are stupid morons who are superstitious (the issue he was dealing with) But love doesn't just look at cold facts, but the implications of what we do with them. In this case, the legal issue of eating meat offered to idols was secondary to whether doing so would hurt someone. And Paul is saying that Love will take a course of self-denial if it hurts someone.
Polls themselves are often skewed from a point of view. So, I don't think much of them. If you can't find good Christians where you are, then look somewhere else. Even if they are not the majority, they exist. It helps to read books written by Christians in other time periods and other countries. Sure there are places in this world where the entire populations tend to be selfish and self-centered, including the churches. If you live in one, that's difficult. What of Corrie Ten Boom and the Hiding Place, sacrificing their lives to save others?
If you wanted to write a book on reality in Christianity, you could expose hypocracy. I think reality is reality, but again, the primary issue is "Do we know as we ought" is it through a bitter filter that wants to rub someone's nose in hypocracy- remember love "COVERS" a multitude of sins. Satan is the ACCUSER of the brethren...
Jesus told the disciples when they sinned. "Get behind me satan...you do not know what spirit you are of (the devil- when they wanted to nuke a town...) Paul flat out tells the Church of Corinth they tollerate more sin than the world. But he also tells them what they are doing right- and warns them to change.
So, if we are exposing something, it should be with a redemptive purpose. "How is this going to help?" If done in the wrong tone it will simply discourage those who are really trying and make Christians seem baffoons to others- which is already happening. We scarcely ever see other groups ripping viciously at their own.
The answer is a qualified yes. Seek honesty, but seek it from "How does God want me to approach this? How does this help people grow?" Not like the Christian version of "Extra" - today we found more hypocrites looking moronic and saying dumb things-we're not covering it up because it's obvious to all when it happens and it happens all the time. But what are solutions to this problem?