what?

For raising to be correct here all we need is 2 things. The turn bettor must not be a complete nit. Someone that would be likely to have A387 or better very often. Not someone that would call the flop with a single nut out and bet the turn with a 2nd nut low. 5 high flush draw and gutshot to a bottom end straight. Someone that would do that could be described as loose aggressive and if we had played an orbit with such player it would be very unlikely we would think he was tight passive.

The second thing we need is for our opponents to have an ability to fold a reasonable range for 2 bets that they would call for 1. Most people that are not complete mouth breathers have such a range. You could even say that the fact that we got 2 folds on the turn for a single bet might to degree support this assumption. And obviously we have no way of knowing if the owner of Q7 would have folded for 2 bets. Somewhat unlikely but 27, 28 or 78 are very likely in the range of hands that some of our opponents fold some of the time for 2 bets but call 1.

My belief is that your line of thinking is wrong, here's why. This is 4/8 Limit Omaha hi/lo in a live setting. It is extremely unlikely that your opponents are highly skilled players. More than likely they are loose-passive calling stations who you can value-town all day. They aren't going to suddenly become gurus of O8 and put you on your exact hand based on your actions, very likely the majority of them are only thinking about how they can hit their hands.

For me this is an easy call spot. I want all those other players in, chasing weaker hands (gutshot straights, non-nut flushes, etc) because when we hit we'll get paid off in multiple spots.