You're right, we can all be irritating to others especially when trying to share the same space.
If, a big if, everyone tried not to endanger or inconvenience others in whatever they're doing it'd be a better world.
Cyclists riding on pavements without care for the pedestrians (yes I know they shouldn't be on the pavement) , drivers that pass far to close, dog owners who don't control they're dogs and horse riders who can sometimes be a bit sniffy that you are on 'their' track. All could be avoided.
In the video the dog owner could have held the dog's collar for 30 seconds so the rider could continue, then let the dog free to continue it's exercise. Instead a row resulted, leaving both parties very angry.
Trips, adventures, bikes, equipment, etc.
Dog walkers? Pedestrians? Cyclists? Motorists? Horse riders? We could all simply exercise courtesy and not get on a high horse (pun intended) about rights. It goes a long way and leads to a less stressful life.