The highlighting below is mine.
What are you on about?
Why on earth should anyone tie themselves in knots trying to avoid filtering? It isn't something to be avoided like the plague. It's simply something - like many other issues - to be aware of so it isn't badly used or overused or unnecessarily used as a lazy or ignorant crutch instead of focussing on strengthening the POV.
If your readers are confused re POV it's your fault for not establishing and maintaining a clear POV.
I have a books that's all about deep pov, and they seem to feel you should avoid filtering as much as possible if you're going for this feel, especially in action heavy and emotionally intense passages. The idea is that the filters come between the reader and the character's perceptions and remind them that they're reading.
One thing this book doesn't provide are examples of entire scenes written in this pov, or examples of how to interface and transition between a portion of a scene or chapter that needs filtering and one that doesn't. It has lots of examples of how to rewrite filtered sentences or short paragraphs in a non filtered way, which is nice, but it's weak on fitting it all into a larger context or recognizing when you may need to employ a little judicious filtering.
As for the passage in question, only one reader has mentioned having trouble with the pov thus far, and I really, really, really don't think I'm head hopping at all or showing things the pov character wouldn't see or feel or think.
I just used the experience as a means of pointing out that past reader experience and expectations will drive their perceptions re how much filtering is enough versus too much, and it's probably not possible to please everyone. Some readers WANT you to say, "Bob realized that..." rather than simply saying what he realized without the filter.
I do agree that there are lots of ways to approach these things and that no "tool" is wrong to use all the time or in all situations, which I was trying to say when I said don't tie yourself in knots avoiding it. I guess I should have said, "Even if you are going for the very deep or immersive limited third pov that is often advocated..." I assumed this person was, since he/she was concerned about it.