Minnesota[1]. Other states[2]. My home town[3].
[1]https://www.dot.state.mn.us/zippermerge/
[2]https://www.fleetowner.com/driver-management-resource-center...
[3]https://www.ajc.com/news/local/gridlock-guy-transportation-o...
Once, (in Pennsylvania) there was construction coming up, with maybe still half a mile until the actual cones to merge. This one guy in a massive truck didn't like that people were using both lanes so he straddles his truck across both lanes causing no one to be able to pass on either side.
Second, (in Colorado) there were signs that construction was coming up in a few miles, and the right lane would be closed. So, I was riding in the right lane, passing a massive line of cars in the left lane, getting flipped off the whole time, only to find out there was no closed lane. The signs just hadn't been taken down yet. So I was being flipped the bird because I was using a lane that was fully open.
I think people just don't like feeling that other people are "getting ahead of them", in life in general, and especially in traffic.
I live in Ontario, Canada, and despite of our reputation for politeness, we have some of the worst/most selfish drivers anywhere. Part of this is because there doesn't appear (anecdotally) to be a lot of traffic enforcement, so people now push the limits as much as possible, whether it be texting while driving, running red lights, tailgating or merging improperly.
The only way I could see this work where I live is if there's strict enforcement to ensure it happens, otherwise you'll see behaviours like people not letting in mergers, or a second car trying to squeeze in after the legit merger.