@BeAware indeed. I think it would help find bots/trolls/bad actors (who connect using normal appearing bios then change them) but equally would just help highlight when people make fun changes (like the common use of names for being at an event, supporting a movement etc) or when someone adds a verified link, new website, updated pronouns whatever. It’s easy to miss such updates especially if you follow a lot of people.
(And dates of when you followed/they followed you can help remind you why)