Auðr opinion time.
As an intersex person who fluctuates with my transfem identity, non transfem folk are more than welcome to make transfem flags. We have very little flags already compared to transmasc ones, and I adore seeing all the ones posted. If perisex ofab (Observed female at birth) folk try to say they are transfem, that is another story.
As a therian who identifies with one or two miscverse labels, miscverse is not NSFW. It was a term created by minors, and the predominant community is minors. Claiming terms that have been reclaimed from NSFW origins are in fact NSFW is wrong. Besides, kink at pride is one of the most common things in this community as pride was founded by kink and black transfems.
[Image ID: On the left side is a girl with long, light-brown hair glaring at the viewer. She's got purple eyes and is holding a shark plush in her right arm. Next to her is desaturated purple text reading, "Auðr or Żaneta. They/Them and Xe/Xem." // end ID. ]