Except they aren't obvious 99% of the time. They aren't even "obvious" like 60% of the time. They aren't even "obvious 99% of the time" for cis-straight (non-LGBTQ) folks.
"Hi, Sam Shepard will be on the call with you today, and will be joined by Alex VanBeckran and Kegan Marton" -- are these folks hoping to be addressed as men, or women, or non-binary? There's no way to tell, and it's kind of disrespectful to be wrong.
> It’s also a form of control in redefining the obvious.
Form of control? What on earth? It's literally just a tiny amount of human dignity. It's basically no different than being asked to address someone as "Mr. / Ms. / Mrs. / Mx." from decades prior.
> Nope, sorry, you need to consciously be aware of my preferred pronouns at all times.
It takes literally almost no extra effort, you just file it along with their name (or phone number, or timezone, etc). If you are thinking that hard about it, your probably doing it wrong.