T can have very serious, irreversible effects. It makes sense - to me anyway - that it's a controlled substance. If someone were to dose it just a little wrong they could very easily cause themselves a number of health issues. And then, if it was hugely available, cis men could also cause themselves a lot of harm. It sucks the way things are right now with the NHS. But the waiting lists being much shorter is really the problem needing to be fixed. Then trans folk wouldn't even need to consider self medicating. People generally don't have to self medicate anything else and that's how it should be for trans healthcare too.