Pretty sure it's coming, I see some Bitcoin podcasts like the Bitcoin Dad always have a shout-out reading their boosts from previous episodes and reminding people to leave a boost. 

I am keen to see how all this ramps up in the next bull run

TheBTCManual

tech

Trudeau Government Moves To Regulate Podcasts

But rather than being passive, waiting for someone to stream some sats, Instead of the usual "comment and subscribe", they can simply say "send us some sats if you are liking the content". I bet most would send.