Looks like its time to switch browsers again. Dammit!
Did you even read the text?!Only new users will see it, and only until their tiles aren't filled with their own content. Absolutely zero problems with this.
Unless you're the kind of user, who has firefox clear history on close. At which point you see those ads on new tabs....all the time.
In which case set the new tab page to blank. Which I do anyways for speed and not wanting my new tab page showing previews of porn.
😉
I don't even know how often I even see the new tab page. I hardly ever open one then navigate to a site. If I want to see something in a new tab I right click and open in a new tab. For searches I have configured the search bar in about:config to create a new tab when searching automatically. That way I can research something I am reading about more efficiently.
With about:config you'll be able to disable it anyways. I'm sure some add-on will also block it.