There's barely any enshitification in Firefox. People like to complain there, because any tiny addition looks bad in comparison. But it's not even close to Chrome's default. An average user is unlikely to notice either though.

But while Chrome was growing, the ad campaign was crazy. You could not miss it - Google results, Gmail header, every Adsense anywhere. Everyone was told to install Chrome when they used internet, every day - there was no escape.