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.
Yeah on one hand the field of evolutionary algorithms is fascinating and I can see potential. But on the other hand it's being run into the ground by people forcing it into everything. It's also not human-readable so people might think they know what they're getting but really don't because of the black box nature of it.