You turn off Patreon emails and push notifications because the episodes just show up in your podcatcher like any other podcast. Patreon isn't offering anything in the relationship beyond recurring monthly payment processing. RSS + your parasocial friendship with the podcast hosts are what builds the relationship.
I'd love it if a podcast-focused company stepped in to fill the same role. They could provide the same custom features that ATP and Dithering/Stratechery have added recently to their paid feeds. The UX of having "Free" and "Paid" feeds for the same podcast really sucks.