I have been using 3 browsers for over a year, Chromium, Vivaldi and Firefox. That’s one too many. What has brought this whole situation to a head is I also have a couple of wireless mice, Microsoft Mobile Mouse 4000. They are dependable and work well except somewhere in the kernel updates scroll distance diminished dramatically (I think from kernel 4.19 to 5.0). I used imwheel for a while, but it adjusts everything and I only want to speed up scrolling within browsers. Slower speed/distance in Dolphin is a blessing. I tried editing the browser desktop files by adding --scroll-pixels=nnn to the Exec= line, but that’s not a good solution.
Firefox has the wonderful about:config settings page where I can control scroll distance with “mousewheel.min_line_scroll_amount”. Chromium and Vivaldi no. I’ll keep Chromium as a backup and for its tight Google interfacing. So goodbye Vivaldi, you’re one Chromium based browser too many. It was a good run for a year.
Mozilla/Firefox, never get rid of about:config. Please. Chromium based browsers are a pain in the @$$ to modify for user requirements. If my life wasn’t so interwoven with the Google/Android environment I’d chuck Chromium too.