Let's break this down, shall we?
Distinction between sex and gender? Yes. Sex is a verifiable thing which everyone understands. Gender is a bit harder to pin down in some of the edge cases, but for most people, including most transgenders, we get what it is, and there's no real dispute about it. So, critical thinkers agree.
Gender dysphoria is a real, lived, condition? There is absolutely zero claims otherwise in these threads. Critical thinkers agree.
Gender dysphoria requires recognition? So far so good. Critical thinkers agree.
Gender dysphoria requires protection? I'm not sure what "protect gender dysphoria" means, but everyone here opposes any rule or law that would make it illegal or punish gender dysphoria. Critical thinkers agree.
So, all the critical thinkers here agree with you on every count. You weren't wrong.
Unless, of course, you also expected critical thinkers to go along with different, unstated, assumptions. Unless you mean that "recognized" and "protected" mean something other than their literal meanings.