If you know they are going to bluff if they miss, it's very profitable and also maddeningly tilt inducing.
I once called $5k cold on the river and won with J high and several over cards on the board in what ended up a $15k+ pot.
Her move esp by a somewhat amateur player is not that outlandish.
Hustler Casino livestreams a regular game with High Stakes Poker. A new player who is also a wealthy model wife type made a call against a pro that sucked out where her decision making was baffling. Off camera but on mic the pro demanded his money back. Then it blew up into a giant drama of accused cheating.
Here's my read on what happened: this woman is basically buying her way into being a poker celebrity, something many people have done before, some of them successfully in the long run. She's new the game, and pretty clearly not as sophisticated a player as the rest of that table, to put it mildly. This hand would be a very bizarre one to cheat in, as there were others with much more upside and that would trigger less suspicion. On the other hand, new players often combine both overconfidence with nervous panic, especially when say this is the biggest stream you've gotten onto yet with your plan.
So basically I think she just made a huge emotionally driven donkey call like you'd see at a drunken house game, then just said whatever she thought would sound smarter than "I did a donkey call." Then when this big figure in the poker world is giving her the death stare and then asking for his money back, she probably just wanted to put out the fire as quickly as possible.
This is by far the most parsimonious explanation.
I played in a weekly game back during the early 00's poker boom, where one guy that showed up pretty clearly just wanted to get away from his wife and get drunk. It was a low stakes game (intentionally so diverse friends could play) and the amounts involved were totally immaterial to him. He had zero problem being the fish of the game and no real pride in his play or the outcome.
There's some advice about never being better than your boss, particularly in public.
I despise it, btw.
She destroyed everyone that day. It wasn't because she was a stronger player in terms of her rationale behind each decision. It happens. You really can't conclude jack from 2 sessions.
When people start to deviate from stuff like that, it is either assumed that the player is cheating, or a complete beginner.
Same with chess. When top players start making really weird moves, they're either getting computer assistance - or they've made a nonsensical move. And for people that seemingly never do nonsensical moves, it is easy to conclude that they must be cheating.
It is actually not too different from video game speed runs. The margins are so small, and all the top level players know every move. Discovering new stuff can take years - so if a newcomer suddenly starts making waves, beating seasoned pros left and right with seemingly genius strategies - is he a genius, or cheating? Most in the community will go for the latter.