It meant trans content disproportionately faced a barrier to access. It hurts trans youth in particular, who are less likely to stumble on content, but could really have used seeing it there.
Was the content voluntarily marked NSFW, or did tumblr force the NSFW warning onto the content?
For what I was referring to, it was Tumblr putting NSFW warnings on content. Also censoring content outright. One video I did covering how I did estrogen injections, for example, was auto-removed for being obscene. There was no nudity.
Ok, that's the part I was missing that lead to my misunderstanding. I (incorrectly) assumed the posts were marked NSFW by the creators. Thank you for clarifying that for me. That's pretty awful of tumblr to do that.