I wasted the last 2 hours trying to figure out why #ThunarFileManager does not detect #gvfs on #SwayWM. I should have checked the #Gentoo Wiki page (https://wiki.gentoo.org/wiki/Sway)... In its examples, the wiki page always starts sway via dbus-run-session. I had started it directly via the sway binary...
So, starting right now, my .bashrc file will contain this little alias definition:
alias sway="dbus-run-session sway"