Most people expect sex within weeks. And no matter how great you find someone, if sex with them is a chore due to you not finding their sexual organs appealing(which is something you can’t really control), that’s not going to be an ideal relationship.
And on the point of finding something attractive about your partner that is the source of their dysphoria, that seems like a recipe for disaster and hurt.
I can understand how it doesn’t feel great to read those points and how it’s a talking point that you wouldn’t want to see in communities you follow, but to call it transphobic just because it’s hurtful just doesn’t seem sound imho.
But in this case at least it’s not simply boiling someone down to their sexual organs, but rather recognizing how their sexual organs could realistically affect the relationship.