It's clearly a profitable shove, but I'd raise-fold in that spot every time. I was playing the 2.50$ turbos when I started out and people in those buy-ins just don't realize how wide you can shove on button opens with the added value. Ax and pocket pairs are generally everything people will be shoving on you there in those stakes, with which they will almost always have you crushed and are likely to call anyway if you just open shove.

Sure, it's exploitable, but so is almost everything that will get you a massive boost in ROI at the micros.

Every now and then however you'll come across people who will shove any two when you min open from the button, so there isn't really a right answer there, if you have no information on the players in the blinds.
All you can do is get enough experience in the stakes you're in until you have an idea of peoples general ranges when you have no reads on them.

In this spot concrete I'd be looking at 2 things, one which you did perfectly and I assume you did check the other even though you didn't said on the topic.

BN: 5,555 (Hero)
SB: 6,570 -> Villain we worried GII 20bbs with A3s
BB: 1,577 -> Should we flip flop here vs this villain?

So I'd like to open-raise 2bb here, even though we get to be exploited by the SB if he's really good, he'd be only shoving here with good hands as the Big Blind being short-stacked can really show up here alot with a call.

I don't dislike any Ace here BTN vs blinds but you have to know when to give up spot for sb vs bb action and when to put the chips in, I don't see villain there cold-calling you 20bbs with worse and when he does, you at best in a 60%-40%. So even though I do like the idea of shoving over the blinds so we don't get exploited (remember you only giving them a 50-50 of either you fold or you call. When you open-raise, they have 33-33-33, as they can either fold, call or raise.) I'd much prefer in this specific spot open-raise/fold to jam of SB, call jam of BB.

At those sngs, even though at the times I played them I could see lots of regulars, most are multitable massive and won't even have their eyes open when they have to shove anytwo at some spots which villains are being aggro happy. Everything is exploitive, just try to figure it out which spots can give you a lead over the others.