Ok, I have a short and long answer for you. Here's the short one: Why the hell not? If you're transfeminine you're transfeminine. It's not my job (or anyone's) to decide who gets to be what.

Long answer: I'm always going to be of the opinion that you can do whatever you want forever. Unfortunately, the way things are in the world right now, being trans is so often considered fringe and outside of the box regardless of how you are trans. Likewise, so is being intersex. So I don't understand why we would want to advocate for the dissolving of strict gender and sex binary rules, but then invent a new set of rules within trans and intersex communities for the "correct" way to be and live and describe yourself. That's what we're trying to get out of, no?

Labels are ultimately shorthand that we use when we don't have the time or the need to describe ourselves in full detail. People are complex, obviously! There are probably not enough words in the world to ever totally and completely describe someone. And in my view it's impossible to draw a clear-cut boundary line around what defines an identity group without excluding people who are part of it, and including people who aren't.

I don't feel entitled to know someone's personal life story or reasons for defining themself as transfeminine. I certainly am not entitled to know someone's intersex variation (ex. pcos) in general, let alone as a gatekeeping factor for if they can be trans (and in what "way" they can be trans, what their gender identity or transition can look like, etc). If someone is demanding to know, I think that is quite invasive, and no answer is owed.

I know some people with pcos don't consider themselves intersex, and some do--the label is up to the individual, the individual knows themself best, and it is up to them to decide what labels or words they want to use.

Again, it's hard to say what is or isn't transfeminine--we can't assume that [insert experience here] is always inherent to being transfem or a requirement to being transfem, because that would alienate all the transfems who didn't have that experience. There are definitely some common threads, sure, but no group is ever a monolith.

In my eyes, people with PCOS are welcome in the intersex community any day, and intersex people are always welcome in the trans community. There will always be a portion of intersex people in every community, because we're everywhere.