The controls are fine and so is the quest pacing. It's not bad just because you don't like some of the things it has.
When it's a major problem that turns people away from the series
every single time a new one releases, yes, it's bad.
"Why is the camera so terrible?"
"Why do I have to get goldenfish before fighting cool stuff?"
Every time a new game releases, people drop it because the controls are frustrating and they don't get to do anything cool before their patience wears out.
For new players, it's obvious the whole game is bewildering. It's only a good game if you already know what's going on before you start playing. There's like 3 control schemes for the goddamn menus. They spend half the beginning of the game pausing every other second to explain stuff, then half the features in the game are still unexplained. Some of the naming makes no sense, like Razor Sharp & Sharpness gems vs Sharpness +1 and Handicraft gems. I have no idea if Slime is an element or a status effect.
The Monster Hunter thread was filled with people that
didn't even know if they were hurting the damn monsters. Tackles hit you when you're behind the monsters and not even touching them. Your own partner AIs hit you from behind off screen when you've got a clear shot on the monster. It took me forever to figure out why monsters were getting tired and slobbering themselves. There are key items to creating things that you can only get through god damn lotteries. Fucking Blossom Crickets and Long Fragments.
You ever try playing the game without a wiki or weapon trees or people to ask questions? How else would I know that a monster that fights underwater is weak to fire? Or that I'm spending 12 hours grinding a 2% drop to make a weapon that sucks? Or that the monster I'm fighting is too high rank to have the parts I need? The game is a drag without the community, and it's annoying with it.
Instead of improving the base combat of a near decade old game, they just keep adding gimmicks and reusing PS2-era stuff.