Hello, @vivaldinew111 ๐
I'll give you my opinion from my average user point of view.
I used Firefox for a few years in its early days - including Firefox OS - and what I liked the most was that it had support for different languages (including Spanish), was absolutely fast and was compatible with most of the things I was interested in.
However, as you say, over time more browsers appeared that offered more and had better policies - messages with which I felt identified.
In the end, more than the speed and what it offers you, it makes you feel better when in its blogs, its community, you find a sense of belonging, and that's what I got years later when I met Vivaldi. - Besides functionalities that nobody else offered me and I didn't know I needed, like the panel and the double floor tabs.