Answer by Sourav Ghosh for I've decided to leave my job entirely over ergonomic reasons. How honest should I be at the exit interview?

I'd still say - do not go into details, give them a very generalized reason and move on.

As you mentioned in another comment that when you wanted to discuss / report this issue, HR folks got angry, so most likely citing the same reason for leaving is not going to be taken positively and appreciated.

There'e nothing for you to gain by providing any feedback at this point. Most likely it'll be taken as a rant and the interview report will go to bin.