[amoeba]

you are right soah, you should be raising with an even worse hand strictly speaking.

I don't feel its a waste reraising here though as your EV from the reraise is higher than your EV from just calling.

although strictly speaking it would be better if you reraise here with 72o as the EV difference between reraising and folding is even bigger.

techinically its not a bluff though. because if we expect all better hands to call the reraise then its not really a bluff but rather trying to pick up the pot and force opponent to fold a hand that while worse than ours has odds to call.