Acceptance is a fuzzy calculation. You have to decide if their issues, habits, quirks, and behaviors outweigh their core. Maybe their core is fucked, and none of the rest matters. Maybe their core is decent, and their surrounding details are minor. Maybe their core is very good, but the rest of their shit is overwhelming.
In this case, I think a lot of issues are pushing into the red zone, and it triggers the circuit breakers on most peoples calculations. Their decisions are made for them, based on the process of defensive mechanisms and fight-or-flight. The person exhibits traits that are unattractive, and they obscure or wholly negate the positive attributes of the person.
There may be little or no IRL danger to speak of, but the dynamics here are different. Much of the goal here is simple enjoyment, which the subconscious views as "life" in the online environment. Threat to enjoyment is perceived as a threat to "life", and therefore the defensive mechanisms become valid, and avoidance is the first line of defense.