This is one reason why it's important to not try to do too much over RSS. The question isn't "can we re-implement every social media feature using RSS," it's "what is the minimum amount of interop we need in order to for an ecosystem without gatekeepers to flourish," which hopefully will make things bearable.
Besides that, I also think this problem can be ameliorated to some extent by using and developing open-source feed parsing libs like Python's feedparser rather than using a plain XML parser and doing the rest yourself.
Besides that, I also think this problem can be ameliorated to some extent by using and developing open-source feed parsing libs like Python's feedparser rather than using a plain XML parser and doing the rest yourself.
[1] https://feedparser.readthedocs.io/en/latest/