I would be shocked if this was true. I have recommended KeepassXC to many of my friends and family and they all use at least one of the features that was in the removed list. To be fair, none of them use debian, but some of them do use other Linux distros.

I don't use debian on desktop anymore on my main machine, but I did use BunsenLabs for a long time and even back then KeepassX (and afterwards KeepassXC) auto-type was a critical feature I used literally every day.