>"Firefox has become Chrome-lite."
Perhaps more Chrome-*like* but certainly not Chrome-lite. Firefox has more features and control, not less.
>"They killed their own extensions program and introduced their slightly modified version of much more limited Chrome's webextensions in its stead for example."
1) From my understanding, the current Firefox extensions model is not more limited than Chrome's.
2) Mozilla had no choice at the time, they had to change the model so it would be possible to make the browser multi-threaded, which is something very much positive and needed.
3) The change was also needed to improve security.
4) The major addons were available pretty quickly and over time the ecosystem bounced back.
That said, we were promised more UI control in Firefox addons, to gain back some of what was lost, and that has NOT materialized, and users do have a right to be upset about that. But Chrome/ium never had it in the first place, so it is not like Firefox is worse in that regard. And, unlike Chrome/ium, Firefox has an entire "userChrome" function which allows tremendous customization of the UI. Something Chrome also never had and probably never will.
https://www.userchrome.org/
https://github.com/Aris-t2/Cus...
While many extensions were immediately ported, the Selenium IDE was not ported for years. Additionally, the current version seems to be abandonware with just one release years ago.
The Selenium IDE was a go to tool for web developers ten years ago and it was the primary reason many devs used Firefox for web development. If you needed to get to page 9 of a form you could write a test to take you to the correct page with three more clicks than just manually going through the form. If I had a bug reported in a funnel I always tried to reproduce the bug in Firefox because it was so much easier to iterate on in Firefox.
Mozilla didn't provide resources to help the Selenium IDE get ported because not many users used it, but they failed to understand that the users who used it were the ones that made the internet work well with Firefox and that losing those users would drop Firefox into a second tier browser.