Providing HRT shouldn't be specialty care. It's not really that complicated. A primary care provider can get the necessary info in like an hour of reading.
Unless you have an unusual endocrine situation, anyone who says it's particularly challenging either is misinformed or has a gatekeepy agenda.
Heck, trans people have been doing it DIY using grey market pharmacies for ages.
@starkatt my initial doctor didn't do sublingual, interestingly, and wouldn't give me progesterone