No sure about the rest, but this one is 99% someone taking the piss.
There are legit SJ Tumblrinas aplenty and their actual opinions are retarded enough that there's no need to post obvious trolls.
Signs a poster is most likely a troll:
- Look at the tags. If a Tumblrina is complaining about transmisogyny or some shit but is randomly tagging the post with a lot of unrelated but generically sj-flavored tags like #feminism #otherkin #racism #scopophobia etc. it's probably a troll.
- Unironic usage of "(die) cis scum", "uwu", " (◕‿◕✿)" or "check your privilege" in a post more recent than two years ago.
- Their blog has posts complaining about their mom wanting them to clean their room and do chores or about them getting grounded and calling it abuse. Almost always a troll. Look out instead for terms like "gaslighting" and "survivor" getting thrown around liberally.
- They use one of the default themes unedited and don't have themed icons/backgrounds. If the font size is nigh illegibly tiny and the theme is pastel colored with a bunch of anime/cartoon characters, it's probably legit.
- They barely reblog fanworks for their fandoms and barely interact with other like minded Tumblrinas, it's all just their own posts or reblogs from other obvious troll blogs.
I probably forgot a few, but those are some reliable tell-tale signs I've noticed.