I agree, I don't think anyone here who hasn't done this is guilty of anything nor do I think this is "sin". I think this is where it ventures into a territory of religious ethics that is akin to fundamentalism in how literalistic and unrealistically demanding it is. This is the kind of stuff that leads to nihilism or, not just misanthropy, but hatred of existence as such. It honestly doesn't sound like a concept of the Divine that deserves our worship and participation.

I'm high and tired right now so I'm having trouble formulating my thought further than that but I really agree.

Edit: Upon noticing the Orthodox Cross, I quickly looked it up and I found out that this is indeed an Eastern Orthodox monk. I'm still having trouble formulating it, at the moment, but this theological origin isn't the same as the evangelical fundamentalism I had in mind so I want to retract that. So I will qualify what I said. In this theological context, his point is a little clearer. He is probably a believer in Universal Reconciliation or Universal Salvation, and doesn't even believe in hell or damnation. So it's not like a person is damned individually for not praying for their evil abuser. Although, I still feel like by putting this individualistic demand upon the action of the individual to enact universal salvation as opposed to it being a pure gift of the Divine towards creation, then it also means that those who are victims have the greater task of creating the space for eschaton and bear a larger guilt for potential failure than the "evil" ones.