I know it's not the same, but if you bookmark "https://www.youtube.com/results?search_query=%s" and put in a keyword like "yt". You can type "yt whatever" in the addressbar and it will do a search on youtube.
Same here. Call me naive all you want, but I do think Mozilla has our best intention. They won't sell the data, they will try to keep it as secure as possible and anonymize it. As seen they even made a deal with Cloudflare to ensure they don't log any of that data.
I'm a strong advocate for privacy but if I'm going to give away my data I'd rather have it be Mozilla than Facebook or Google.