How do we feel about Lemmy communities that ban others based on a protected characteristics e.g. gender, sexuality, etc?

So I just discovered c/womensstuff, commented in a thread that took my interest and got a somewhat abusive "eff off" comment from a mod with added sarcasm.

I then saw it's "women only". This is the only community I know that bans based on a protected identity of a person, e.g. in the UK, it's illegal to discriminate based on gender, sexuality, religion etc.

How does everyone feel about this for Lemmy communities?