A good answer, and nearly a very excellent one. As you say, an elementary one.
“Thee” “Thy” and “Thou” are the traditional second person singular English pronouns, and they are not gender specific. Neither is the second person plural, which has nearly obscured the singular, in imitation of the Romance language honourific forms of address.
Thus, if a person wants to have specified pronouns, thou should address him (traditionally in the third person, the masculine was used to cover the neuter, not “one” or the even more barbaric third person plural) in the Quaker fashion, and ask him to do the same, so that one thou is speaking with him, he does not confuse thee in thy speech.
I was wondering what there plan is with Spanish? Does that language get a free pass with all of its gender rules?
PS - One cannot argue, nor attempt to emply logic with insane people. We are allowing them to control the narrative. Laughing in their face is a good response.
Youse?