By all accounts the past couple seasons he just shows up drunk to record his lines, be obnoxious in the office for a couple hours and then go home.
The actual writing and content hasn't really involved him. So assuming they can find a voice that isn't too jarring, odds are the average person won't know or care and the show will be just fine.
To be fair AI models are being replaced multiple times a year these days.... So yeah, in 2 years it should be killed, because improved models should exist.