> Mozilla realized it was actually doing something useful and that such things would upset its unofficial corporate overlords, so it shut everything down.
I don't think that is the case, no. If you have any kind of evidence, I would be very, very interested to see it.
> Hopefully one day we’ll have a fast and light web browser again :(
There are fast, light browsers around. I like NetSurf, which originated on RISC OS but now runs on lots of things. There's also Dillo.
But they are small, fast and light because they don't do Javascript, and that makes them useless for a lot of stuff.
I welcome suggestions on how to improve that situation. I do not think that Gemini is an answer.
Midori used to be small, light and fast, but not any more. It's another Blink browser now, AFAIK.
Epiphany is still quite snappy, and it's the only WebKit browser for Linux AFAIK. (This also means it's a fully native browser for Linux on Arm, because there's no Chrome for ordinary Arm Linux, or for Windows on Arm64. There is a native Arm64 Windows Firefox but it's well hidden. Chromium exists of course but it is quite limited.)
Epiphany is also the best browser on Haiku.