Everyone seems to poke on the vim vs emacs/gnome vs kde/systemd vs everyone else but it seems to me the most toxic feud in the foss world has been x11 vs wayland. People had throwed shit at it because of their own specific issues and its “slow” development pace without realizing it’s a titanic endeavour and the hate and toxicity brings absolutely nothing positive to the table nor the development of Linux & FOSS in general.
I’d suppose if you ask this on KDE Reddit someone with enough time could make something like this with Kvantvm, though the difficult parts would be (1) the web browser theme, and specially (2) the icon theme - I have never ever seen an icon theme like that for Linux