Google is now rolling out a system where Chrome directly tracks your activity and shares its summary with advertisers.
Also Firefox is faster as of like two months ago.
It takes five minutes to switch browsers, and the difference is so little that you’ll often forget you did it.
Problem is webview , until there is an option from Firefox. You can either use the chrome one. Or use the chrome one. Whatever browser you use. So adding Firefox mobile only give you issues from Firefox on top of issues with chrome.