[MarineBrat]

Sounds like another instance of a project manager justifying his existence by changing the look and feel of something that already works.

[CedarDave]

You will see the names Photon and Proton as you try to navigate the complex maze that is now FF 89.
Proton is Firefox’s new design, starting from Firefox 89.
Photon is the old design of Firefox which was used through version 88.

[Bob434]

Or laughing their butt off because people hate the changes. Sometimes I swear they do these things on purpose because they enjoy ruining a good thing

[zeugma]

Sounds like another instance of a project manager justifying his existence by changing the look and feel of something that already works.

This. Why the hell do programmers constantly mess with working UIs? Time wasted on that crap takes away from time that could be spent making the application bulletproof.