I would like to reply to this hand but would you please elaborate first your two strong assumptions? (That we are never getting raised and that villain has no incentive to raise the flop with his monster draws/made hands)

Long story short: flop is low enough not to be great for our preflop range, and from my own experience, near every player in this limit is undercbetting these flops, a response to which is people underraising cbets. Me myself am having trouble deciding a cbet/fold range. On a flop that has so many draws present (which we do not really block), cbetting no equity hands just feels ineffective. Maybe a JT76 with Jhi FD? However these to me feel scarce enough that when I am facing a cbet in villains spot, I just do not really consider raising apart from absolute monsters with showdown equity OTF. With everything else It just feels so much better to call and play that flop IP with a considerable playability advantage (huge amount of turns change the effective nuts). Maybe QQJ8hh of sorts, but playing a 70% range on a flop that even if weakly often connects with something, playability advantage OTT sounds so much better. So given not many hands are willing to bloat the pot OOP on this middling flop, I don't see why IP player would ever not just call or fold - play the position game. Except for a superior minority of hands. Please contribute :P

Firstly if you c-bet the BTN will almost definitely be raising most of his pair+FD, wrap+FD hands, QJThh, KQJhh etc. I don't see why he would just call those. Safe to say he even jams hands like 987hh the majority of the time.

That being said I check / fold the flop your hand for the reasons you stated. Most of the deck is horrible for you on future streets and is going to be too difficult to play.

Yeah I'm not convinced ppl are only flatting big draws here vs a Cbet. Jamming with these hands for fold equity seems like a common and reasonable play. Once you check I think folding is the best play x/calling feels like burning money. Cbetting flop has merits and you will get some folds. If you do get called potting brick/good turns (not many I know) seems like a reasonable strategy. JNandez did a good video called 'flop strategy as aggressor' he had some good ideas on using some hud stats like fold to Cbet, raise vs Cbet and call vs Cbet In 3b pots to figure out how to exploit your oppenent. Ie if this villain is folding a lot to cbets this hand could become a mandatory Cbet. Just like you said your pre flop 3b was!