I hope that's actually a meme/joke.
I'm fully on board with access being a right.
But even the less risky meds have contraindications that aren't going to be understood by the average person. None of the HRT meds I've ever seen should be OTC for that reason. It's the greatest risk with DIY HRT, but at least there you have a better chance of people running across the information before starting.
Since there are alternatives for most of the meds, but you'd have to know what they are and how to dose them correctly, DIY is last resort, not first line. If someone has any preexisting health concerns at all, they really need more than a pharmacy pamphlet before picking meds, and definitely more than would be on the side of a box.
Yes, people can do research on their own, and do. But once the sample group of people taking HRT and related treatments on their own gets high enough, it's not a matter of if deaths will occur, but when. And yes, that can be the result of any of the substances used.
OTC? Not by the usual sense of the term, no. The goal is to give people the tools needed to achieve their goals while keeping them alive and healthy. It's totally doable to have open access without upending the protections that exist in what qualifies to be OTC or not.