Updates vs Upgrades
Thinking about this mess draws me to the conclusion that the problem is a blurring of the line between Updates and Upgrades.
Updates should be limited to the underlying nuts and bolts of the software. Adding compatibility for HTML changes and suchlike. One essential characteristic should be that the UI should not be altered unless it is absolutely essential. Even then there should be warnings that enable a user opt out even if auto-updates have been enabled.
Upgrades are the place for stylistic product changes. Style is almost by definition a subjective matter. I prefer the Classic windows style of page for PCs and eschew any others. That is my choice and I respect others who prefer other paradigms. There should be room for both.
It annoys me that I have to be smart, to be cunning to avoid the traps and pitfalls arranged by people such as the Mozilla design managers. On a PC I use extensions and CSS style sheets to take the Firefox UI back to the old layour circa version 40. On Android I have had to scrub Firefox and reload/sideload version 68 again (see above).
It shouldn't be necessary. I shouldn't have to treat Mozilla with suspicion every time they release a new version. I should be persuaded to make donations to them rather than curse them. You may ask why I don't go elsewhere. It's because the rest are worse.