Actually, they are federally limited to very specific uses of data sold.

https://en.wikipedia.org/wiki/Driver%27s_Privacy_Protection_Act

In Florida "emergency contact information and email addresses are restricted pursuant to Section 119.0712(2), Florida Statutes." And this "Non-personal information contained in motor vehicle and driver license records such as vehicular crash records, driving violations and driver status information are considered public information." https://www.flhsmv.gov/privacy-statement/driver-privacy-protection-act/

There is also a complaint form for Florida but I can tell you from personal experience it won't do anything. I got 2 email responses that were bollocks and phone call telling me "we don't handle these types of complaints" from FLHSMV when I complained a local car dealer sending direct marketing info. The dealer straight up told me they get their data from DMV but the guy from DMV said "probably not" and left with no recourse.