For lots of small businesses in cash-heavy markets (e.g., gas stations or convenience stores), it's pretty easy to end up making a series of $8000 deposits and end up being charged with structuring. Regardless of whether you can beat the charge, the cost of having to defend yourself is punishment enough.
Of course, you can argue that this isn't really common --- most people aren't small business owners who happen to be making just under $10,000 every week. But the point is that even though each of these laws ends up targeting a small fraction of people, there are enough of them that everyone ends up violating a few of them at some point.
Just because there have not been actual convictions for said offenses does not mean they are not prosecutable. Depending on the state, simply interacting with an electronic device while driving (to change the station for example), can be a punishable offense.
I wonder if these laws have an "out" for police officers while they are driving...?
Also, traffic infractions usually aren't crimes or misdemeanor in most jurisdictions.
Also, regardless of the level of criminality, driving infractions can be/are selectively enforced. Being pulled over for being distracted can quickly lead to being arrested for some other offense, or for the police to search your car, or even for them to claim you were aggressive and shoot you dead.
I know that's not something the typical urban/suburban HN visitor deals with on a daily basis but it happens.
I wouldn't call any of those exactly 'common', but they're far from criminal.
These laws exist to only be used sparingly as needed. They're to be used as a surprise "gotcha" for someone that couldn't otherwise be "gotten" If prosecution under these sort of laws was overused they the laws would be changed.
I'm not saying I agree with it.