Rules... lol. PHB and DMG are guidelines. It's a good way to start D&D for sure. But once you're comfortable enough to go outside that, homebrew is most fun, rule tweaking to encourage thought provocation for escapes from situations is what I love about the imaginative world of D&D. If they didn't come with drawbacks or bonuses then there'd be no reason to choose Acid Splash over Firebolt because Firebolt has better damage aside from proficiency bonuses or enemy resistances. I am here to see an already good looking game (aside from most of the popular issues that I agree with), continue to stay amazing, and I have no doubt Larian Studios will absolutely make the game incredible as they have with DOS2 and the modding community will add in all the other books (Guide to Ravnica, Ahmonket, Eberron, Xanathar's, etc) if the need be.
People are also complaining about CR rating vs levels (Hardcore eyeroll) those guys make me cringe hard.
I will continue to enjoy a game as I see fit. I have no worries about a game until the community derails it in the early stages when given the opportunity.
The reason to choose Acid Splash over Firebolt in RAW is simple: it can hit up to two creatures, while Firebolt can't. Aside from that, literally nobody is telling you to not enjoy the game how you see fit, we're just saying that we are not enjoying some of these changes they've made, and want them tweaked or reverted. That simple. You wanna gather every barrel you come across and save them to nuke the big bad? Go for it, nobody is stopping you. We just want there to be a few less barrels in encounters so not every 2nd combat encounter can be ended just by blowing up barrels. Not saying remove them entirely, just adjust them. Most people aren't saying things like surfaces, barrels, special arrows, etc etc need to be entirely removed, just toned down and adjusted. As for CR rating vs levels, I don't really care how they choose to display the monsters difficulty, just want them to adjust them a bit so they aren't stupidly OP (three attacks as a single action? Kiss my ass, Gnolls)