@deutrino They partnered with an ad company called System1 in 2020, but I think that partnership is over. Looks like it ended in 2023.

@deutrino Librewolf / Zen seem to be the most popular among people I follow 👍

@deutrino
I don't remember, but I know LibreWolf is good and people like it, so long as you're ok with pretty strict privacy focused defaults.
You can disable a lot of it in about:preferences#librewolf if needed ;)