Not interested in your continued downplaying of McVeigh's time in Adelaide, the signs were there and he was already a better than average player.
w/ Adelaide
20-21 - 18.9m, 9.4p, 3.3r, 1a, 47.8% FG (42.5% 3p)
w/ Tassie
21-22 - 26.2m, 12.2p, 4.8r, 0.8a, 45.8% (37.3% 3p)
Yeah really "turned him around".
Re: leaving Tassie, I doubt McVeigh would be "pretty well off" financially. His initial 3 year contract at the Sixers was straight out of college and would've been relatively cheap for the security of 3 years.
At Tassie he was a pretty good player in his first two years (12.2p & 14.8p) but no superstar. In his last year there he averaged 17.3p and that renegotiated deal might've been his only year on superstar-level money. Last year in the NBA as two-way player he was on $580k USD. He wouldn't have made enough yet in his career to be "pretty well off" and at 29 now he's got to try and prioritise the financials in the second half of his career.
That's why he prioritised the NBA attempt over coming back to the JJ's and keep in mind they could've held a spot open for him in the likely event he missed out on an NBA contract but they chose to sign Bannan early instead, understandably.
He spent 3 years at the JJ's and 3 years before that at the 36ers, you weren't whinging about his lack of loyalty when he left Adelaide, we were the team that gave him his shot in the NBL and developed him. You being shitty at McVeigh now is a pretty ordinary take.