The problem with this hypothesis is, someone beleived enough in her poker skills to give her 100k to play against some of the best players in the world, and she had reportedly received coaching. I have also watched around 6 hours of the first two streams, she played on, and she played pretty well. One might even say a bit conservative. She took a free showdown with a straight, when a flush was posssible, and she got bluffed in at least 3 hands, where some players might have called. She had the lowest VPIP of the entire table. So the J4 hand, and also some prior hands in the third stream, were very uncaracteristic for her. Which begs the question why? What was suddenly different, that made her totally change the way, she played?
I think, many people are a bit naive about, how these streams and high stakes poker in general work. Unlike other games in a casino you cant just go on a waiting list to join a stream. You need to be invited, and for rather obvious reasons the people making the streams prefer to invite players, who can attract viewers. The stream is after all entertainment. One of the obvious ways to get invited to streams is to be an attractive looking female. Like for instance the player known as "Poker Bunny". She played a bunch on the Hustler stream and used this to build a brand for herself. A brand which now presumably allow her to get invited to private games, where a lot of the high stakes action takes place these days.
The point here is, that "Poker Bunny" is not doing this for fun. She is doing it to make money. So she is a professional player. And by the same token for someone to invest (literally) houndreds of tousinds of dollars in promoting Robbi on the Hustler stream, they need to have faith in her ability to play poker on at least a reasonable level. Maybe she dont need to be good enough to beat the best pros. But she need to be able to beat the rich recreational players, who come on the stream and maybe more importantly in private home games. So the idea, that "LOL this is, what happen, when fish play poker" dont add up to me, when we know, she was a sponsored player.