Doesn’t matter, you are still effected by this issue since any images from communities you or anyone else on your instance follows get cached on your server, doesn’t matter if you actually looked at them or not. I would advise you to look into this if you are the instance admin and didn’t know this by now.
Recall is local
Even then, do you know how many companies use Microsoft for everything including their most confidential data?You live in a foss bubble if you believe regular people/companies don’t trust Microsoft to reasonable degree.