No, it isn't. They killed adblock, and have a business model of throttling other browsers to force people to Chrome (Youtube throttling) and doing digital fingerprinting with exclusive-only Chrome finger prints as seen here on HN the other day.
Firefox has anonym, where it sells your 'anonymous data'
https://lifehacker.com/tech/why-you-should-disable-firefox-p...
I just looked, go to Settings -> type advert and you'll see
Website Advertising Preferences Allow websites to perform privacy-preserving ad measurement This helps sites understand how their ads perform without collecting data about you. Learn more
It comes pre-checked for you.
I use Chromium for dev stuff, but now; there's no ublock origin.