If a heterosexual comes into a Christian bakery and asks for a “wedding cake” for two homosexual friends, and the baker refuses to make it for him, then how exactly is the baker engaging in any kind of discrimination on the basis of sexual orientation?
That’s a different kind of heterosexual of course, who is included under the second A of LBGTQQIAAP, namely “allies”.
I wonder how Karl-Maria Kertbeny, the journalist who coined “homosexual” and “heterosexual”, would regard the ever-changing expansion of pseudoterms that his own pseudoterms spawned.