W/r/t the diet question, I think that’s incredibly valuable and useful information for EAA.
That’s likely true, but I presume the reason for considering removing it was that people would feel uncomfortable/judged/guilty and so stop completing the rest of the survey, which would be a large cost. Last year I was happy or even keen for people to know all my other answers, but didn’t want to be judged on failing to be vegetarian.
This would make it especially valuable to get people on the fringes of EA (who’ve been exposed but not wholely ‘signed up’) to take the survey. I remember it was open to them and anyone else last year.