Finally found somebody else who's been advocating for full-history RSS (RFC5005)! Apparently there are two of us in the world. This person cares particularly about paginated podcasts, which would let you browse all the old episodes of a podcast no matter how long it's been running. I've heard from a bunch of people that this is still a big problem for podcasters. https://podlove.org/paged-feeds/
The Mangopay exodus is proceeding well so far: €5100 and $600 have already been transferred from the wallets of donors to creators, while €4800 and $440 have been refunded to donors instead.
(If you don't know what this toot is about you should read our blog post: https://medium.com/liberapay-blog/liberapay-is-in-trouble-b58b40714d82 )