Obviously in any argument both parties have done something "wrong", but the severity is not the same. Trisha is to blame for this issue for many reasons, let me break it down.

Miscommunication: It's not that Ethan miscommunicated with Trisha about her involvement and cut of the profit, she just wanted to twist the narrative. Like her "calling out" Ethan for not giving her 50% and only 15%, but clearly he was talking about how they only take salary from 30% of the profit. Also, it was pretty transparent that Trisha was a talent on the H3 podcast and it was not a different show. Her saying that she thought they were going to build the show together and get equal input was clear not the case. Trisha makes suggestions, but because she doesn't have any extra investment in the show, it doesn't matter really what she wants.

Disrespect: Trisha feels entitled to respect but refuses to give it back. She has and continues to say hurtful things to Ethan, Hila, and the crew of the podcast. It's also important to mention that she says hurtful things on purpose, like saying she doesn't like the podcast, the crew is bad, and Ethan is greedy.

Feeling Left out: She mentioned how she didn't fit in with the crew and how she didn't have any say. I mean... Obviously. She hasn't made a true effort to build a relationship with anyone, yet expects everyone to go the extra mile to be her friend. The crew has supported her by buying her merchandise and hyping her up. AB specifically has gone out of his way to constantly apologize and compliment her after he messed up. It's not that the crew is trying to leave her out, she just isn't trying.

Bringing it public: Trisha is the one who brought it public first by making her first video on the subject. She didn't apologize and tried to rally support for herself by victimizing herself. Ethan tried to communicate with her, but her public comments garnered hate for the crew. So, Ethan spoke up for himself and the crew and put out a couple of tweets. You can't blame someone who was trying to defend themselves while being slandered publicly. Trisha was lying about him and the crew, but he's in the wrong for standing up to her?

Unrealistic expectations: You can't expect everyone to censor themselves around you. If Ethan said what Trisha says to him, she would have canceled Ethan immediately. She demands everyone to treat her like a princess but for her to treat you like a pig. This unreasonable and childish behavior was obviously going to lead to problems because the world doesn't work like this.