@lanodan@domi i’ve had a blog attempt that way — the page just rendered in the rest of the browsers through an XSLT stylesheet client-side without any js (and Chrome wants to pull support for that against public opinion!).
So like, Seamonkey showed an RSS feed, Firefox and Chrome showed the styled content. Although an XSLT resembling the old Mozilla rendition could be crafted (if it wasn’t done that way in the first place).
And not just me, I recall several people were blogging to a syndication feed that way, even on fedi