The difference is Chrome atleast gives you the choice (maybe illusion?) to opt-out of *some of the telemetry.
Mozilla to-date refuses to build a one button switch to disable all telemetry [0] and there's calls to telemetry domains such as location.services.mozilla.com you cannot stop on some of their products like Firefox Focus (ironic for a privacy product).
so you are willing to accept chrome on android that does not have any extensions so you cant have UBO and you have ads and scripts and all the BS of unprotected interent but you fear firefox telemetry. nice
I do not fear telemetry. What I refuse to accept from Firefox is a FOSS product being as bad if not worse as Chrome on the telemetry and data collection front.
I like uBO but you can replace it with a dns filtering service for 95% of its use case (ad blocking).
It could just be me but I do not see browser extensions on mobile as a killer feature. Moreso, when the same extensions are primarily developed for desktop.
But a) that link is about desktop and b) Google don't need to do this on android because they've already ID'd you up the kazoo by requiring a gmail account to even use the OS