It isn't always, but it's normally an indication. I have met the odd multitabling fish, who are gifts from heaven. And I am certainly not talking backwards.
We don't credibly rep any hands by 4betting, BTN folds sometimes sure, but they also flat or 5bet sometimes too because I don't rep much and people hate to fold. So I am losing all value with AQ and turning it into a bluff. Our EV is higher not 4betting in my mind, and I think that's relatively clear that in terms of EV it's probably fold/flat (both close and stylistic a lot) >>>>> 4bet.
if he flats your 4bet "because people dontlike to fold" you can still assign the same range to villain as you were doing previously by flatting his "squeeze"
You're not turning it into a bluff, because like you said. a lot of people flat here, but what you are doing is folding to a 5bet because we're almost certainly way behind.
There are optimal lines for this hand, and the way you played it was none. Thats my 2 cents. You are blindly throwing money into this pot with level 2 thinking.
you've assigned him a wide range because he oculd have been executing a squeeze. and now you're call stationing your way to a showdown hoping he'll turn over the wide range you are praying for.
thats all this hand is.
i also stand by my previous notion of folding pf