some pro on a sports team, there may or may not be a roster tool to deal with your injury. so you go off books, maybe even more than a year. you still get paid. you have to go see the doctors and try to train within medical limits and such. you retire when you want to give up trying.
i see this that way. she probably still has a sponsor. she's maybe pulling down some money. it probably helps family finances. and she can keep trying to get well, use sponsor resources to do so. she retires and presumably her sponsors are out of the picture and she better have an income, and she's on her own for recovery.
i personally wouldn't want to post my workouts online -- it's kind of hovering surveillance type stuff like trump/elon wanting to know 5 things you've done this week -- but among the compliant i'd see it as a signal you're well and open to scrutiny.
your very post speaks to why one might not want strava involved when in extended rehab or dealing with reaggravation or injury issues. it invites a bunch of questions. are you hurt. are you done. what is wrong. and it's not just whether you are well or not, but also sometimes the sense that maybe less stress might help you feel better.
and yet it provokes the what's up response anyway, if you were playing along before. which is why i wouldn't do it.