Your prejudice is showing. "Exfiltrate" implies a surreptitious operation. E.g. Merriam-Webster: "to remove (someone) furtively from a hostile area"; Dictionary.com: "to escape furtively from an area under enemy control"; Collins: "to remove (data) from a computer, network, etc surreptitiously and without permission or unlawfully".

When Firefox is first launched, it opens the Privacy Notice page https://www.mozilla.org/en-US/privacy/firefox/, which is totally up-front about data being collected. Nothing surreptitious about it. Data is not "exfiltrated", it's simply "sent". But that doesn't sound nearly as evil, does it?