So we now have Inkscape, vector only or Krita, which should be getting better vector tools to be able to compete with Affinity. But, Krita is a rasterised application in the end.
@Metin_Seven you forgot about these in your Mastodon post:
Penpot https://penpot.app/
And Graphite https://graphite.rs/
Graphite is still very much in the works and can expect to get a desktop based app in the future.