@grishka to me it's slightly better UX to see human readable time intervals like that for relatively short periods of time. It's easier to reason about someone that was last online last week, than someone was seen on the 8th of Jan 2025. For intervals longer than a couple of months I'm ambivalent...
@mariusor but the problem with that is that "last week" loses an entire week of precision. Such a timestamp provides no useful information. I can understand it with "X hours ago", but any units larger than an hour are meh because an unacceptable amount of precision is lost