Do you get that the troopers in uniform are pulling people out of traffic? That is not voluntary, and lacks consent.
Are you aware that the troopers are surreptitiously measuring BAC prior to getting consent? No framework for probable cause is even attempted.
What are you correcting?
If someone is stupid enough to give DNA, then they shouldn’t count on being able to get that evidence suppressed.
You seem a lot more concerned about the alcohol testing on initial contact (which I would attack on scientific reliability, not consent) than you do about what happens after that. Have a drinking and driving problem?