Article 4(b) actually states that to verify you you (for a data delete request), they must do their best to use info they already have on you, and "Avoid collecting the types of personal information identified in Civil Code section 1798.81.5, subdivision (d)"
and in 1798.81.5,(d)(1)(A)(ii) we see: "Driver’s license number"
4(c) also helps: "A business shall generally avoid requesting additional information from the consumer for purposes of verification."
So if they can verify you another way, they must, and cannot ask for the DL (likely the only ID many people have)!, if i read that correctly
So instead of jumping through their hoops, file a CCPA request and have them chew on that.