The “GNU/Linux community” — a rather loose and somewhat vague term — doesn’t have a sexism problem (not any more than proprietary software have such a problem); it has a traitor problem and it’s typically due to greed. People are lured to betray and to attack their fellow people/developers. They defect; they decide to malign and rob the Commons as that certainly can be profitable (in the short term at least; their reputation soon collapses).
It’s rather troubling to see the rhetoric employed by these defectors; forget about old stigmas like “communists” because now they weaponise more modern types of politics. Rejecting someone/something from a particular company isn’t prejudiced if that company is evil and corrupt. However, if that company can self-identity differently, then that might at least seem (on the surface) as intolerant. Intolerant companies try to portray their critics as the sole source of intolerance or “equally intolerant” (hence hypocrites). This type of political method has long been leveraged against Free software.