I would guess that however small the chances of being reanimated by benevolent people are, the chances of being reanimated by non-benevolent people are much smaller, just because any benevolent person with the capacity to do so cheaply will want to do so, while most non-benevolent futures I can imagine won't bother.
I agree the chances are much smaller, but the question is what happens when you multiply by utility.
My girlfriend/SO's grandfather died last night, running on a treadmill when his heart gave out.
He wasn't signed up for cryonics, of course. She tried to convince him, and I tried myself a little the one time I met her grandparents.
"This didn't have to happen. Fucking religion."
That's what my girlfriend said.
I asked her if I could share that with you, and she said yes.
Just so that we're clear that all the wonderful emotional benefits of self-delusion come with a price, and the price isn't just to you.