I lucked out, I'm on a two year project that just wrapped up and we skipped useMemo for the most part. Then it got announced that the new React version will depreciate that.
There will be no wrapping up this project in the foreseeable future as it’s part of our main platform. I’m looking forward to moving from cra to vite and removing one ore more of the three css frameworks we are using. The App is also still incomplete as it’s replacing an ancient asp net project still partly in use … so it’s legacy hell over here. Also it’s all class components so .. no useMemo atleast for now.