It sure does help if there's not a moron in front of me and the right lane is jam packed with cars. Otherwise I end up being the idiot who had to stop at the end of the on ramp.
One of the other advantages of driving a beater is that people somehow get the idea that you are either uninsured or have no problem hitting them, so they get out of your way. Between that and being able to summon an inner Bostonian when driving, I usually have few problems on the road, aside from the left lane blockers. People don't often close the gap when I'm changing lanes, for example. They do when I drive nicer cars.
Actually, that behavior is the second most annoying to me. It's dangerous and it discourages people from signaling their lane changes. And promotes aggressive lane changing behavior.
I occasionally find the right lane packed enough to make it difficult to get in but only rarely if I am close to traffic speed. A lot of the time the courteous drivers let you on the road only to block the left lane. I drive the Turnpike (4 lanes, 2 each direction) more than 169 (6 lanes) or the BA (lots of lane variations). The 35 mph moron is a problem, period. I usually deal with them by actually hanging back just a bit and look for a spot to enter the highway and cross quickly into the next lane and get around the moron. I don't want to get hit from behind going 35 in a 65 zone. It takes a willingness to watch the gas mileage gage go to single digits for a few seconds. Don't try it in a mileage master that takes 1/2 mile to get to 40 mph. Usually a mile or two later the moron passes me by at least 10 mph.
Large (big trucks), beater, old vehicles pretty much have the right of way in that order. If you are from Boston, Tulsa traffic should be a cakewalk for you. Just don't expect a gap the length of the Arkansas River to merge into. One of my cousins lived in Boston a while ago. Traffic was interesting. If you are not too easily intimidated, you can survive. Left lane blockers are the slower courteous drivers leaving the right lane open for merging. See other discussions regarding 4 vs 6 lane highways. I must just have bad luck with merging traffic entering slow then rapidly accelerating to match my position and speed when I do pull over to let traffic merge. There is nothing especially noteworthy about my 98 Buick to make them want to do that.
Courteous depends on the situation and the eye of the beholder. If I am going 65 in the left lane of the turnpike and someone in the right lane going 55 changes lanes in front of me to let someone on the TPK with lots of gaps in right lane traffic, I do not consider that to be courteous. If there is a string of cars entering westbound at Yale and the left lane is clear or nearly so, sure - move over and let them in. Just hope you don't need to get off at Riverside. If you do, you will frequently need to pick a lot smaller gap than you would like to get into the right lane to exit. Been there, done that. There is almost always a gap between me and the car in front of me big enough to pull into if you observe the laws of physics. (You seem to be technically adept from other postings.) I will not try to block you. Please, just don't pull in front of me and then slow down to pokie okie speed.
I don't expect we will agree on this. Each of considers the other to be discourteous. Hearing your side has been interesting.