I feel like you’re using “supercede” differently to the rest of us. You’re getting a hostile reaction because it sounded like you’re saying that EM is no longer at all useful because it has been obsoleted (superceded) by QM. Now you’re (correctly) saying that EM is still useful within its domain, but continuing to say that QM supercedes it. To me, at least, that’s a contradiction. QM extends EM, but does not supercede it. If EM were supercedes, there would be no situation in which it was useful.

“X depends on or is built up on Y” does not imply “X is Y”. Concepts, laws, techniques, etc. can depend or be higher-order expressions of QM without being QM. If you started asking a QM scientist about tensile strength or the Mohs scale they would (rightly) be confused.

nobody I deal with in RL ever implied something among the lines of "refer to me as ".

Most likely because they’d never experienced someone referring to them by the wrong gender. You can be pretty sure that if someone started doing so, they’d have something to say about it.

Which is what the other commenter was trying to communicate to you. Gender is already a key component of most cis people’s personality - the way they think about themselves, the framework they use to make choices, and the way they want people to relate to them - but it’s not noticed as such, because it’s “normal”, so no-one comments on it and they don’t have to act to assert it.