We don't talk about Pun-Pun
I've definitely seen this with newer DM's, and once they get it into their heads that DC's of 20+are perfectly acceptable for 1st level characters and that you need to make rolls for everything, of course their players are going to all going to make sure they have the best possible die rolls.I agree, and in particular with the book you mention. I'm a little more lenient on D&D 5e adventures though simply because I view that as just another DM giving their interpretation of how they use skills to help communicate their vision to the reader. There's always going to be some variation on how ability checks and skills are applied from table to table, so when it appears in a module, I'll grumble but I understand. Still, some DMs take modules to be official statements about how to use the rules, so they carry that forward sometimes to their own detriment.