AA on xyy board (WA/WB?)

[kitaristi0]

You pick up AA in MP and raise. BB calls. No read on BB.

Flop comes 55Tr. BB leads into you with a bet (1/2 pot to pot).

Previously in this spot I would always raise in this spot. The more I think about it, raising here seems dead wrong. This is clearly a WA/WB situation. We know that raising in WA/WB situations is wrong.

However, I see tons of posts here with situations like the one detailed above, where most people advocate raising. Is my reasoning that this is a WA/WB situation flawed in some way, and thus is raising in this spot actually the correct play?

Thoughts?