Those are made on Firefox engine. That is made and maintained by the company Mozilla. Which is experiencing those problems.
It’s like those people who say that they don’t use chrome because it’s shit and breaks privacy, they use edge and brave.

Edge isn’t really better in any way. It’s both Google and Microsoft, like the marriage of awful

Firefox’s future isn’t looking good with all that layoffs and lost money. I am very scared that it might go the way of Opera, and then we will trully have nothing left.