I really disagree about AA and KK being more likely than 9x. These will be 3-bet pre flop so often that they're pretty unlikely imo. This is 2NL where from what I've heard people treat top pair as the nuts, and altough they may not be "thin value betting 3 streets" out of being a good player, they may well still want to get a lot of money in being level 0 thinkers and liking what they see. Pot control is surely not a concept familiar to too many people who play for fun with a $2 stack.

At 2NL the vast vast majority of players don't read poker forums or think about what they're doing in the slightest, so weaker hands can easily be in his range here especially given that you've given him no reason to slow down (calling a min riase on the flop doesn't scare these guys). At 25NL this line would concern me more.