I'm not convinced it absolutely needed to be made. They could've clarified that the draw cap acts as a play restriction, so that you can't trigger draw effects when draw-capped. We were halfway there with the latest Val ruling anyway. That would've taken care of the most egregious cases (Janos Slynt, Valyrian Steel link). Then we would've been left with people occasionally taking Cragorn back to hand when the opponent doesn't have gold, and a very few other cases with low impact. The meta would've survived that.
But overall I agree it's not a big thing. The meta will adapt, and in the long run it might be beneficial.
About people overthinking things and getting hung up on technicalities - I agree that tends to be an issue. I think we've talked about this before. I think it has gotten worse in recent years, and FFG themselves have contributed to the trend. I mean, CS Jhogo had been a Dohraki for years, and nobody thought anything of it. But then people started to rule in tournaments that Free Man was not a Wildling, and talked on 2C1C about how we cannot know it's a typo because FFG might wish to add the Wilding trait at some point, and that Archibald Yronwood doesn't work because we can't know what a character agenda is. And when FFG responded to this by adding superfluous entries to the FAQ (4.20, I'm looking at you) and issuing errata to obvious typos instead of just saying "oh, COME on", people started thinking this amount of pedantry is expected and needed. And so we ended up with people talking about how they'd go to a tournament with 6 copies of Randyll Tarly in their decks, because the KotSea version lacked an el.