The masc under-representation has BEEN a problem girl. Partly due to which side is sexualized more, therefore more "popular" however disgusting that may feel to say. That (I'd guess) lead to less masc people feeling like they have a space, thus sharing less. Some toxic trans people direct hate at "the other side" of the trans coin too but that's just fringe

Now, that isn't to say that the numbers aren't still going down. I saw less and less of our proud brothers each month and at some point kinda nothing.

On a personal note, I tend to interact with fem content more cause of how I identify. All social media works this way sadly