Firefox

I am not going to support the foundation.

In 2021, Mozilla Corporation generated $441 million in royalties, which represented almost 89% of its income.

Source

As of 2021, Mozilla (including the Foundation and the wholly owned For-Profit Corporations), had total assets worth over $1.1 Billion USD [...]

Source (inb4 "bUt LunDukE iS bAd" - his personal and political views have nothing to do with his research analysis work in this article)

It's the choice of either blocking some extension(s) or getting their whole domains blocked in russia, so mozilla chose the first