The problem is that any bartender who has scanned your drivers license has the information required to scam an online validation without some other validation.
If you want good online validation for the public, you need a third party right now. In the future, in some states, you’ll be able to use a mobile drivers license, provided you own a smartphone. Also problematic, as the government has to support everyone. Foreign nationals pay tax. People in nursing homes who cannot appear before a DMV need to pay taxes.
You can yak about corruption and incompetence, but that honestly attests to ignorance on the topic.