We can do better than that: an LLM can ingest unstructured data and turn it into a feed. You shouldn’t need someone else to comply with a protocol just to ingest their data.
I don’t get why people keep fantasizing about a system that gave consumers no control. Scrape the website directly. You decide what’s in the feed, not them.
An LLM can try to do that, yes. But LLMs are lossy compression. RSS feeds are accurate, predictable, and follow a pre-defined structure. Using LLMs to ingest data which can easily be turned into an parseable data structure seems strange: use the LLM to do the "next part" of the formula (comprehension, decision making, etc)
There is also LLMs.txt https://llmstxt.org/ eg https://joshua.hu/llms.txt / https://joshua.hu/llms-full.txt