RSS persists. This is a big picture, there's strength in numbers, and all the open products and protocols that are preyed on should have rules about what formats and protocols they support, and support is more than tech (though that matters most) -- there's politics and economics to interop, and is very strongly connected to free speech, which btw is a hot topic now. All these things are connected, and the smarter we are about it, the stronger we will be.
https://daveverse.org/2025/09/27/rss-is-permanent/