Regarding "knots" vs "core30"
A future where nodes can filter based on format, but not content is what we need.
Format filter is trivial. Content filter is hard and hence centralizing.
Content filtering will be required if "core30" becomes dominat to prevent CSAM and other spam.
Format filtering wont allow OFAC, because filtering transaction based on addresses or amounts is content filtering, not format filtering.
A format is just a template or structure of a transaction and ignores the content.
This is a fundamentally important differentiation