If she's 'obsessively' defending Woody Allen, from what I've seen it seems to be because others are repeatedly making unfounded claims.
It's the same sort of thing as Jesse Singal 'obsessively defending' Abigail Shrier or Glenn Greenwald 'obsessively defending' Trump.
As journalists, each have ended up deeply researching the evidence about Allen, childhood transition, and Russiagate, so find themselves reasserting that evidence in response to others whose narrative doesn't align with the evidence.
Certain people just do get really obsessed with pointing out lies and errors, even when directed at Bad People. The only way to stop them is to be more accurate when attacking Bad People. (And if they're that bad, how hard can that be?)
That sort of character is going to often overlap with being GC - annoying pedantry about facts and evidence.
Not that all Allen defence will becoming from that direction, of course - I can see that a pro-TRA pro-Allen overlap also makes sense ideologically, regardless of evidence.