Who is they? oh you mean Lawnchair developers, yeah its true. I have stopped using instagram, twitter, facebook but some services are really hard to dump because of real social circles specially boomers.
Firefox supplies a search bar widget that then uses your Firefox search settings, and it's how I do things
See:
On Nova
Tapping it immediately opens Firefox in the search bar with the keyboard open, and allows me to use my search history, browser history, bookmarks, and search suggestions, all at once: