I don’t understand how they are supposed to “sell your data” if you just never use a Mozilla account and uncheck all the telemetry. Its not like they can secretly steal your data, since its Open Source.
It seems to me like just more FUD that Google is spreading to undermine our trust in free software.
“and we never will”
this should imply something that cant be changed. Such empty words should no longer be even considered no matter who says them, unless its paired with enforceable punishment for breaking the word