I was about to create a thread to say the same thing
Especially : things like Fire Bolt wouldn't need to be nerfed compared to 5e if there wasn't explosive stuff everywhere. The real issue was not that Fire Bolt was overpowered, it's that the use of explosive environment has been abused.
I totally get it, by the way. In games I DM, should there be a good reason for a barrel full of explosive material to be in the scene and one of my players want to make it explode, I would allow it. Because it's cool, and everything that makes the game cooler should go in. But I would have made it a one time thing, it stops being cool if it's all the time.
Now, this is a big part of the engine so doing it only one time would be a waste, but at the very least, it could be rare enough that it's not used as a reason for altering core balance of 5e mechanics. It's a finely oiled machine with decades of tuning to make it perfectly balanced, I would regard any change to the ruleset as highly hazardous and to be avoided when possible, rather than thinking "our engine can do this cool stuff, so let's change dnd rules to fit it".
