'Tis true. Just bought a new-ish Jeep a couple months ago and wanted to pay a little more than half in cash. They told us if we financed a little more they could do better for us.
WTF do I care...we just wrote a big first month's payment check when the first one arrived anyway and wound up at the same place.
OT oddity: the F&I guy shockingly did not try to upsell us on anything, probably because (direct quote) "I've never seen a credit score that high!".