Infinity for reddit mentioned trying to keep developing and if they can't get API access, they said pivoting to a lemmy client is on the table. They posted this in their sub on reddit.
Exciting since I infinity for reddit is a fdroid only client that rawks!
My long-term vision for RedReader is to restructure the app to more easily support other sites, including Lemmy, and perhaps others such as Tild.es and Hacker News. Before the API changes were announced, I was already considering adding RSS reader functionality to the app, and I think it would be cool to work with some kind of "open forum protocol" which would allow a variety of websites and apps to interoperate with each other through a uniform API.