You see this in the formerly female-dominated subs on Reddit, once the tranny jannies took over and the inward flood of MtFs commenced, you would have at least one post every couple of days asking "Are trans women welcome here?"
Again, and again, and again, and the mods would never delete like they would other repetitive posts. And every single time the remaining women in the sub would have to affirm that yes of course men are welcome! Men are so welcome in this sub that was once for women!! And any woman that said "didn't someone else ask this question 24 hours ago?" was instantly banned.