YC isn't that unknown and you can absolutely judge that org for funding stuff like this, you really don't need that much detail. And if you have interacted with a lot of the "founders" you know that statistically you're in the clear to judge them all too. It's a pretty weird world where a lot of dumb exists, like A LOT. The realities of their lives are frankly immaterial anyway, it's about the output (and input in case of VC money).
We only know the basic facts of the wrongdoing that’s been reported here, which is of course fine to criticize.