Hey so I actually am unfortunately familiar with this specific type of charicature of trans men. It's called "the pooner" and is used primarily by transphobic cis men on 4chan and Soyjak.party to make memes attacking trans men, in the very same vein as a troonjak or the "happy merchant" charicature. It is a hate symbol, plain and simple, no different from the types of charicatures TERFs draw of trans women.
Like look, I always try to show grace towards other transfems, I really do, but like... You know how people always say "Art doesn't exist in a vaccum"? Yeah, that phrase is important here.
This charicature, like every other, doesn't exist in a vaccuum: there is, out there, a (going off of the image, presumably white) transfem who:
A) Goes on hateful boards on 4chan and/or Soyjak.party often enough to be familiar with this specific charicature (it gets posted to places like Twitter, YouTube and Instagram too but, because those places at least try to appear respectable, they're nowhere near as common there.
B) Saw this charicature and, instead of recognizing it as horribly transphobic, went "hahah I should totally use this to portray transmasc people I disagree with. That'll show them!"
and C) Felt confident enough to post it publically on Reddit (a site that, for better and for worse, is known to usually be heavily moderated).
It's a bitter pill to swallow, but we (and this includes me) have created a culture where this kind of image is acceptable to not only make but publicly distribute. It was cis transphobes who originally created the charicature, but nobody forced us to adopt it and use it on our own brothers. This is on us, actually.
I'm fucking tired. I keep seeing people I share an identity with make and post this kind of shit, and I'm fucking tired of pretending it's not a real issue within the community. The fact an image like this exists and was posted at all makes me fucking sick to my stomach.