ngl I just put tabs on vertical in Vivaldi and I have even more screen space than in Arc lol. And Vivaldi also supports different "Spaces" (known as Workspaces) so... still wondering what advantage Arc has.
also took all of two seconds to add Perplexity as a default search option in Vivaldi, and I'm sure in Fx it would also be rather simple...
RS3: UltimaSuende
https://letterboxd.com/BMovieBro/