Can’t earn achievements in my world any more because I enabled experimental features all the way back in 2019 when I created it

I’ve had this world since 2019 and had been consistently getting achievements on it as they drop. I was absolutely gutted to learn that because I enabled experimental features 5 whole years ago I can’t get acheivments anymore. At no point did I ever enable cheats. At no point did I ever go into creative mode, I got a message saying simply turn off experimental features to get my achievements back, but the game physically wouldn’t let me turn them off. I have lost all motivation to continue playing knowing that the only way to get achievements back is to start from scratch. Five years of Work, hundreds of hours all down the drain because I didn’t have the foresight five years ago to not enable experimental features. This is an inexcusable load of rubbish, I linked a video showing this in action.