Been in the hobby since the 90s, there was a bit of a boys club thing back when for sure, but women like Trish who basically defined how classic warhammer monsters, dragons etc. looked show it was never a "no girls" zone or anything of the sort.

Anyway, we mostly play other games and only play 40k and AoS occasionally anymore but my main playgroup has been, for consistantly for the last like 2 decades, 4 cis dudes, 2 cis women and a trans woman and an AFAB NB, so like, my perspective might be skewed by just enjoying the hobby with a crowd of friends.