I'm not sure that has much to do with it. Professional athletes overall aren't really known for being arbiters of moral virtue. If anything, some might actually sympathize (or even be able to relate to) being blackmailed by someone, especially if he was better-liked by teammates.
A ton of players (and managers + front offices) have just never liked him. In general, if people don't like you, then you really better bring something good to the table to make it worth putting up with you. He doesn't bring enough. If he played more nicely in the clubhouse and/or he was one of the best pitchers in the league for a long time before he was suspended, I bet he's in the league. I know he did win a Cy in 2020 and was really good for the Dodgers in 2021 before he was suspended, but I don't think he was good enough for long enough to get exceptions made for him.