Man respect to the community and all that but goddamn I got people who are very visibly masculine at work who go with they/them and I've probably called them he so many times on accident.
Like I try to be conscious of it but sometimes it's hard if I'm just chatting. My brain just assigns someone a he/she and moves on.
I firmly believe everyone should use whatever pronouns make them happy but growing up in a very gender normative conforming society (USA, maybe a little less so now) it can be difficult to make the conscious choice of using the proper pronouns someone told me.
I do try though and I'm not complaining. The people I've accidentally misgendered know I am not doing it consciously or maliciously, we're work buddies. I just know it can be very easy to accidentally do that. Now people that do it purposely with malice - fuck those people.