I saw Zeljko Krizan and Cameron Couch made a lot of exploitative play in their game.
How can they make sure that their exploitative folds are the correct play(EVfold>EVcall)?
I mean sometimes we can easily fold the marginal made hands in some spots for exploiting because of we have some experience that villain must be underbluffing.
But Zeljko and Cameron made some really huge/great folds(even in the 500z),so they deviated from the GTO/MDF a lot to highly exploit their opponents.
HOW CAN THEY DO THIS?

For my part,in some spots i have doubt whether my opponents have enough bluffs in their betting range(i think they arent capable of turning enough hands in to bluffs in those spots or their range is vaule heavy before betting).
But i still cannot fold my bluffcatchers(which are absolutely belong to the MDF) just because i cant make sure...

Thanks for any comments.