Grogg of the North
Adventurer
In a lot of DMing, the only time I've asked a player if his PC had/could take spell X is when the players were rattled and trying to figure out how to overcome some problem and usually it was helping out a new player. This seems like something that's worth a conversation at least - "Hey you've brought this spell up a few times, any particular reason?"
I don't think the DM should be making assumptions about any of the characters - if he needs details for something he can ask for a copy of their sheets. It's not like this stuff is a secret, especially playing online.
I am curious, if it's that much of a game-changer, is the rest of the party asking about it? Or just the DM?
It usually comes up when something big and nasty smacks us and the entire party has a look on their face that says "Oh dear, we're gonna die!" What's funny is now the rest of the group has started answering that question (Do you have revivify?) for me.
It's not just me though. It took the DM a long time to realize that the party sorceress did not know fireball.
