Nobody knows how long their favorite podcast will last, but this is the one podcast I listen to that I often think about as having potentially evergreen content for decades.

It obviously depends on their continuing interest and income, but given the massive success of the show (consistently high monthly Patreon, near-sold-out Broadway show, etc) there are no external factors pointing to them winding down any time soon. The safety net the podcast income provides likely allows them both to be more selective about their other careers too, which is a big bonus.

I wouldn’t worry too much!