Last time I took a peek at Chromium (yeah, not even Chrome. Chromium!) I was still getting pummelled with nonsense about the need for me to open some sort of Google or AppStore (or whatever they call it) account. I'm not joining that universe.
So where to go? At the moment I'm happy with my Waterfox. And there's the somewhat similar Basilisk-project from the Pale Moon camp. But I realize these are overwhelmingly likely to be dead ends in the slightly longer run. There'll come a day when recent uMatrix et alia will no longer work. And a day when the dev-teams themselves throw in their towels.
The FF57-thing is just depressing in its own right, even without this added round of Mozila idiocy. They couldn't offer us just the option of an extra toolbar, or any customization worth the name, really. Firefox of ten years ago had vastly better UI than this latest, dumbed-down iteration.
But I suspect I shall sooner or later have to return.
[Edit: typo]