Of course, podcast ads are also the opposite of almost all the other ads on the Internet: They don't send your personal data and web browsing history to hundreds of shady companies, they don't slow down your webbrowsing, they aren't a vector to install malware on your system.

Thus, I have absolutely no problem with podcast ads, and if they allow a great podcast I like to be produced sustainably, that's awesome! The same way I also don't have a problem with ads in printed magazines or on billboards (yet; some of them already do track you, of course).