Yeah, very interesting. Makes me think of a few things.
First, that same concept in Sweden is alive in England. You can literally walk across anyone's property lines. "Ramblers" go for walks on the weekends and literally just plow across fields and open gates to access paths. Lots of fighting about it but ultimately it is allowed.
On the other end of the spectrum is Sourth Korea. We wave occasionally but there everyone bows. Literally every time you pass them. Even if they are riding uphill. Pretty weird.
When it comes to horses I totally get it. So many riders think they can skirt past a horse, but I tend to dismount because I know it is really easy to spook a horse. You don't want 1,000 pounds of out of control meat with hard hooves bouncing around, it will crush your bike.
As an community there is always an asshole in every town and that person does far more damage than we can ever make up. It's sad but it is so hard to reach these people. Typically they are new riders who watch Red Bull rampage and think that is what it is all about. The entitlement of that crowd is strong.