YJIT is not deprecated. That word has a specific meaning in Ruby. You can continue to use YJIT. With any luck, this performance in the next year or two will be

YJIT is not deprecated. That word has a specific meaning in Ruby. You can continue to use YJIT. With any luck, this performance in the next year or two will be enough to make it a happy change. "Damn, free money" etc