snowgirl, I truly respect any other rider. I'm only offering advice because, thru the fog of the Internet, you seem to be a newish rider who is just reciting some recently taught doctrine.
My sincere apologies if I've misinterpreted our relative levels of experience.
The "drive like everyone is out to kill you" has nothing to do with the actual motivations of ANY driver.
That is the exactly the problem with this mindset. The way you should react to a driver who does not see you (common) is very different from the way you should react to an aggressive/malicious driver who doesn't like you (rare). If you assume the rare case, you may be setting yourself up for an accident in what is actually the common case.
According to Wikipedia, the only state that really seems to allow lane-splitting (and indeed, is the universal example of a state that allows lane-splitting in the USA) is California. In general, lane-splitting in the US is illegal, while it seems that it is generally widely legal in Europe.
Actually, that wiki article states that lane splitting is illegal in "many states", but it gives no reference, and the only states they specifically mention are Colorado and Nebraska.
I know a few guys in law enforcement. I suspect that if you polled the Colorado and Nebraska highway cops on their actual enforcement of these state laws, they would tell you exactly what I will tell you: It's all about SAFETY.
If you split lanes at 100mph in a 55mph zone....you're clearly breaking the law, and should be ticketed for speeding plus anything else that will stick.
If you split lanes at 55mph in a 55mph zone, when traffic is stopped...you're an idiot. The cops will never catch you, but a lane changer might, and then...game over.
If you split lanes at 20mph when traffic is stopped, or at 55mph when traffic is moving 35mph, it depends on your experience. Personally I've learned to look 10-20 cars ahead and anticipate gaps and lane-changers, so I'm comfortable with a 20-25mph differential. A new rider, or an aging rider, may want to take it more slowly.
In any case, I will argue that splitting lanes in slow traffic is generally safer than getting boxed in. The wiki article that you linked mentions that David Hough, one of the leading authorities on motorcycle safety, shares this view.
Based on my experience, you should PASS a dangerous driver as quickly as possible, with as wide a berth as possible, and increase the margin. If you hang out behind them, you get boxed into a worse situation with other cars.
Perfect sense, except that often times they're going a reasonable speed compared to the speed limit (either at, or 5 miles over), and so in order to give yourself a wide berth, you're looking at speeding.
Again, it's all about SAFETY. If I can safely "speed" past an erratic driver, and get even further ahead, I will do it in a heartbeat rather than run the risk of getting boxed in with someone who could swerve or brake and cause an accident that dents a few cars, while killing me. Speed limits are supposed to protect us, but sometimes they do the opposite. Use your head.
If I could give just one piece of advice to any new rider or aspiring rider, it would be this:
Take a MSF-certified riding course before you try to ride on your own. Get trained & tested by deeply experienced teachers. Just because you love your friend, or spouse, or family member, doesn't mean that they are qualified to teach motorcycle safety.
YMMV.
Keep it upright, and enjoy the ride.