It's just as speculative to assume that Brad saw red flags and booted him from the program, no? Like you said earlier (I think it was your post) we'll never know what actually went down.. so all we're left to do is speculate.unless you know what his ask was (or ballpark, minimally), you're in the speculation zone
As for my speculation, I'm sure money was a big factor (isn't it always) but I doubt it was the root cause. I could picture a scenario where Jayden was just flat out not happy here so in order to stay somewhere he didn't want to be, he required to be paid above what last year's production may have warranted. And that's where the breakdown happened.