I really hate whenever I try to explain how some bad rules can be abused and immediatelly get someone say shit like "If this happens in your group, change it" as if that would solve the problem. And whenever it is not soemthing you witnessed personally, then it means it never happens and could never happen.
I get annoyed when people say things like "big deal, just do xyz yourself, why are you complaining?" . Because making a clear and comprehensive game is WOTC's job they are being paid for with our money!
If the system has a flaw, it's their job to fix it, if they don't they're doing a bad job.
That being said, 5.5e has been pretty cleaned up in this aspect. I'm honestly shocked at how they both added new fun systems and codified a lot of vague mechanics.