First, thanks for being polite. I do appreciate that about this forum. All adults here who can be friends and disagree.
Mankind does. Its an archaic term and inaccurate. Women are not a kind of man. Peoplekind is stupid, just use the world people. Human not so much, because human is a whole word, not a combo of different words with seperate meanings.
Seaman is a label for a man. Sea-man. Sailor is also a whole word and label for a job. It's why I say infantry or infanteer not infantryman. Labels should be inclusive.
Do I correct other peoples grammar and make myself an insufferable virtue signaler? Nope. Speak how you like. I've a hard enough time controling my own brain-mouth connection. I don't need the job of looking after yours. But if you ask I'll tell you what I think (which the survey is doing).
If language is inclusive people feel included. It also why I never start a presentation with "Good morning ladies and gentlemen" I start with "Good morning everybody" because it includes everyone. As a leader I'm responsible to include everyone. It's why I use staffing or crewing, not manning. Perfectly acceptable alternatives.
I never used to think like this but what does this cost me? Nothing. What does it get me? From those who notice, appreciation and surprising loyalty. But most won't notice.