>so who/what/where do I pay to get some podcasts I want to listen to without it?

Podcasts are still, and I hope stay that way what the web should be

Most podcasts offer some kind of Paid / Subscription that is Ad Free, but you have a subscribe to them Individually, not through a platform like Spotify, then you need a Add like Pocket Casts where you can add the Subscriber Feed instead of the public feed.

I do not want Podcasts to become an other Platform Pay Walled thing that Spotify, Apple, and other want to make it, Keep Podcasts Independent and Platform Agnostic

Yes, but that sort of thing isn't included as part of a normal Spotify subscription. It looks like Spotify has support for podcasts subscriptions, but it's all on a one off basis as far as I can tell.

Out of the podcasts I listen to, I'm not sure a single one uses Spotify for subscriptions. Commonly it seems to be Patreon.

With all of that being said, many quality podcasts have jarring ad segments on purpose. Partly it serves as an ad for the ad-free feed but they also serve as a way to inform the listener that the following words aren't the podcasters' own and they were paid for an endorsement.

I think most podcasts post the exact same episodes to all popular platforms. Some may have an ad-free version on Patreon.

With Spotify, it's sort of similar to when the paid YouTube (Red/Premium) became a thing. Yea, you'd get rid of the Google-picked ads, but the in-video sponsored ads added by the video creator would still obviously remain.

Uhh Yeah Dude is one of the very first podcasts (est Feb 2006). Zero ads.