Hard disagree. And how is this even relevant?
> The implication is "you have to conform, and if you don't then you don't belong".
Conform to what, being nice? That was already the case. A group is very unlikely to change their ways regardless, especially just because you barge in and say you are marginalized and start getting offended at things.
For one, "hey guys" is often said by people of every possible group known to humankind, but also if you really wanted to, you can ask them to use a different term without saying you are part of some marginalized (or any) group at all.
The fact that they belong to some group is still (IMO) meaningless in this context, the reality is that they want to play politics and try to get people to change how things operate... you don't need to be part of any group to do that. IMO that's just being difficult.
Maybe you believe it is necessary to identify yourself online as belonging to some group, perhaps in order to force a change, but again I think this is just trying to play politics where it's often not welcome.
If online discourse can exist without people even knowing this much about a person, then I think it's far less likely that they will be targeted for belonging to a group that people are not even aware they belong to.
I'm not saying people need to hide, but I think it's just easier if people can assume "on the internet, nobody knows you're a dog"... if nothing else simply because some people suck, and it's easier to get along in a purely technical project if we don't know that much about you personally.