D&D General Mike Mearls says control spells are ruining 5th Edition

[Maxperson]

The problem is the combination of per-attack fumble chance and representing the increased lethality at higher levels through multiple attacks. So it's not as big an issue in PF2, because higher-level characters in PF2 generally don't get more attacks. Instead, each attack gets individually more lethal through striking runes and weapon specialization. But in a game like PF1 or 5e where the biggest damage increases you get are from multiple attacks? Fumble-per-attack is devastating and turns fighter-types into the worst clutzes.

Yeah. Back in 3e it really bothered my group that fighters became more likely to fumble every round as they rose in level gaining extra attacks. So what we did was make it so that at levels 1-5, you fumbled normally. At levels 6-10, if you fumbled you got a DC 15 dex check that turned the fumble into a normal miss if successful. At levels 11-15 that DC dropped to 10. At levels 16-20, you could no longer fumble unless you rolled two 1's in a row.

 

[tetrasodium]

and it makes sense to me that trying to sculpt the wild energies of more complex and higher level magics would have a bigger chance of backfiring and in worse ways but magic rebound tables aren't exactly being made commonplace are they? wizards don't have a progressively better chance to reduce themselves to ash each turn as they become better spellcasters do they? so why is it so with weaponry and firearms?

Actually up until 5e casters faced a problem directly related to that. Specifically very low hp and the general inability to wear armor other than a few very specific magic/generally unavailable varieties like elven chain shirt & bracers of defense while still being able to succeed at spellcasting. The "rebound" was just outsourced to any nearby monster.

The blame for your complaint lies with 5e's decision to remove risk from casting in melee to roll out the red carpet for no meaningful opportunity cost low investment gish builds