What started gamergate was an ex-boyfriend with the maturity level of a 12-year-old who couldn't deal with the fact he'd picked the wrong woman to have a committed relationship with, and who thereupon decided he needed to whine to the whole world about it in mind-numbing detail, seeking to ruin her name in public and naming every other name he possibly could. Including names of other lovers who'd not done him any wrong and maybe didn't even know he existed. That fact he claimed that he was doing it to "protect others" just served to add a veneer of disingenuity (if he didn't really believe his own claim to this effect) or attention-seeking (if he did).
Sexual matters between consenting adults are and should remain private. Adults do not air such matters in public.
I tend to think if it'd been the other way round, and she'd named a slew of his other and/or former lovers, she'd have been dismissed as a jilted ex-girlfriend who couldn't keep such matters private as they should have been kept, and that would have been the end of it.