Mine is that the useState hook is an actual plague on the entire React ecosystem. Regardless of your opinions of React, if you wanna use something then use it right.
It was either that or suddenly be the slowest person at work, which eventually gets you canned.
turns out, you can just refuse to do so and you'll still be just as fast as everyone else (source: me). Turns out that you'll actually do the same amount of work and you don't have to babysit a robot all day long losing your mind.