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.
Of course they would. Not everyone reasonable of course, but people are terribly stupid by default, even if they somehow stumbled into Firefox for some reason before.
There are people that say stuff like “better the devil you know” or “if I compromise privacy either way, might as well use the more supported browser” or whatever rationalizations people come up with.