I'd believe it. I don't think he's going to go propagandist, I just think that "Someone I love is dead, better freeze them just in case it can be fixed" is a natural thought path for EY. It's possibly not even a conscious propaganda attempt, that's just how smart and thoughtful people are supposed to act.

(IRL, I think it's a bit different because of the cost involved. But these spells are basically free, so why not try?)