My strategy to this will be, if my parents do shit like this (which is very likely) when they eventually figure it out, I’ll just block them. No fanfare.
I’m beyond caring about letting others dictate my life, compromising my happiness. If they cannot accept me for who I am, then they won’t take part in my life, as simple as that. Maybe they’ll eventually come around to it, once they realize it’s either that or never talking to me again, but until then…