He got fucked by the advertisers.
John Wesley Shipp is easily the best Flash we have yet had. He is also gay. The 90s Flash TV show was going great, till the advertisers learned the star is HOMOSEXUAL. They pulled their support.
I’ve been very happy to see how the CW DC-verse shows supported John Wesley and brought his Flash character into many Arrowverse storylines. That was making very cunning use of a man who was groundbreaking in his day and about whom many fans with memories care.