No one is forcing any writer to work with any agent they see as arrogant, condescending, wasteful, or whatever else. If you (generic you) don't like how an agent works, then don't work with them.
Any response is better, IMHO, than none. I wouldn't care if the texted me (and I hate texting!) about it. I would just want to know.
Whining about rules is unprofessional, in my opinion. No one is making you participate in the process of publishing. In fact, if you drop out, it's less competition for me.
Not only that, the rules are there partly because it helps weed out those who are unprofessional. For example, people who can't be bothered to read the submission requirements. Auto-Reject. Helps keep down the slush pile, ya know. No agent wants to work with someone who can't follow directions.