Morally you are right, but I'm afraid this is still how it will play out.
Those who demonize "TERFs" and "GCs" today will continue to do so even as their actual viewpoint comes to align with us because they don't know, and will never know, what it was we were actually saying.
The accepted truth in their echo chambers is that we are people who want to keep old fashioned sex stereotypes and hate trans people for being gender non-conforming. They don't bother finding out what we are actually saying because as far as they are concerned they already know so why would they even think of doing it?
So the consensus in "trans-ally" society will gradually move towards the type of reasonable position we have been asking for all along (ditch society's gender roles, accept sex sometimes matters, safeguard children and vulnerable women, do everything possible to help people live happy lives in the bodies they already have) but it will be painted (and indeed by the participants genuinely believed) as an evolution of the trans-accepting side they were always on rather than a recognition that the woman who raised concerns and were demonized for it were right all along.
They will continue to believe they fought the good fight against TERFs, GCs and others who were just motivated by bigotry against trans people.
I don't think we can change that. Which sucks. But the really important thing is that however we get there, we do eventually get to a place where we ditch society's gender roles, accept sex sometimes matters, safeguard children and vulnerable women, do everything possible to help people live happy lives in the bodies they already have.