Too bad they force you to log in to view a result or do anything but search. They also share/sell your data to 3rd parties including Google

Thanks, added.

Holy Moly, are there really over 100 million podcast episodes out there?

Yes. some numbers: https://www.listennotes.com/podcast-stats/

Listen Notes was started in early 2017 as a side project, when there were ~23 million episodes.

I remembered seeing the number of web pages indexed by Google in early 1998 was ~25 million, then I thought that "ok, 23 million episodes might justify the existence of a podcast search engine" :)