Clearly, you've never lived in Germany or other places that still have data caps and slow and unreliable internet connections.

Yes, 4GB of unintended traffic can absolutely wreck someone's finances.

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Ekaros 5 hours ago | parent [-]

Or places with collateral damage due to failures of German ISPs and state... That is many other parts of Europe while roaming... 4GB is significant cut of the roaming data allocated...

	▲	Bender an hour ago \| parent [-]
		Some time ago friends were pranking each other with 32GB favicon.ico files this was a thing and one of them was on mobile in Germany. Turns out it would keep downloading in the background even if leaving the page. Their account was locked and had a massive bill for roaming charges. That prank went horribly wrong.