It's not. People are having a hard time adjusting and overreacting. It's only a problem if you using singular they specifically and only for trans folk, ie singling them out.
Quite literally, Monica said she avoids singular pronouns in general, not just for any particular group or person, because she doesn't feel that singular pronouns are required to moderate a community in most cases. That was the problem that lead to firing her and starting an undercover witch hunt, with SO leaking private chat excerpts and talking to media to bash her.
This isn't about singling anybody out with pronouns.
The problem is a very small minority within the trans community assuming everything is a targeted attack when people are actually just acting naturally, living their lives.
Everyone shouldn’t have to adapt to appease the 0.0001% hyper-sensitive. That’s not a reasonable proposition.