If people with gender dysphoria are told that it isn't a mental illness anymore and self ID is implemented, then there won't be any testosterone or HRT available becausenof won't be recognised as a treatable condition. There will be no surgery options, no puberty blockers, nothing
I don't think this is the case. I think in the new utopia with self-ID where anyone can be trans whatever they wear, however they present and whatever they call themselves with no requirement to prove gender disphoria to be trans - then gender disphoria still exists it is just not a mental illness.
It becomes purely a physical issue like all the other variations on human basic which happen every so often due to genetic issues: This boy was born without fingers on his right hand. This girl was born with six toes on each foot. This boy was born with a penis which only extends a few mm from the pubis (what used to be called a clitoris) and without external testicles. This girl was born with an additional growth between her legs and her breasts aren't developing properly in puberty. Like with other physical variances, some people will choose not to have any surgery and some will. Whether or not you want the extra bits of you removed or missing bits substituted with artificially constructed alternatives will be a matter of assessing to what extent your difference from a standard body shape is causing you distress or hardship.
To be honest, if someone could wave a magic wand and entirely eliminate all the structural inequality and discrimination against bleeders&birthers (the category of human that used to be called women) then I would not have any issue with this new utopia. It would be great.
It's just that bleeders&birthers (of any gender presentation) do have different needs to penis-bearers (of any gender presentation). We need additional opportunities in many fields to correct against astronomical underrepresentation and structural and unconscious bias from the penis-havers who dominate senior positions in so many fields of endeavour because of all the barriers they didn't have to face when they were in their teens, twenties, thirties etc. We need different categories in sports as our physiology is different. We need penis-bearer-free spaces for changing and in hospitals and prisons for our safety and dignity.
If self-ID becomes law we will need to organise to create these protections and accommodations for bleeders&birthers. It will be a long road.