Strongly disagree with the latter statement. Both sports are a life long education. Anyone who says that snowboarding is easier to get good at needs to reevaluate how they define "good". That's a myth perpetuated by old time skiers who don't understand the subtleties of the sport.
Of course there are little nuances of snowboarding. I'm just talking on a regular resort. Park and backcountry changes the game. I've seen snowboarders who have only been riding for two years killing the slopes.
Skiing is harder to master because there are so many ways for you to use all those edges and poles. With snowboarding, you have no poles and two edges to work with. Snowboarding is more focused on practicing and progressing. Same goes for skiing, but there is just so much to learn with skiing techniques because of the things I mentioned above. That is why I say it is more versatile and harder to master. Technique for technique, skiing outnumbers snowboarding.
As for getting your car searched for a traffic violation, you have the right refuse. Cops can't search your car for a traffic violation if they don't have anything solid leading them to believe you are in possession of illegal items i.e. drugs, guns, etc...
Cops don't have to ask you permission because the single act of you not refusing the search is basically you saying yes they can.
I've refused a search when I was living in Vegas before. Cop tried to search my car for running a stop sign. I asked what reason does he have to search it and simply said no when he didn't come up with a valid answer. They need what you call "reasonable suspicion". Saying snowboarders that drive VWs are drug dealers is not very reasonable.