That's often a way to protect themselves, because car drivers don't know how to safely overtake a bike. And imho bikes should be allowed to drive right in the

That's often a way to protect themselves, because car drivers don't know how to safely overtake a bike. And imho bikes should be allowed to drive right in the middle so that a car can't possibly overtake. It could be tractor or another slow vehicle and people would find it annoying but deal with it. I do the same when I cycle. And then, when there is an opportunity or I see that I'm starting to block multiple cars and the road is continuing for too long, I'll stop to allow them to take over. In the same way, when there is someone walking on the dedicated bicycle lane that is next to the pedestrian walk, I'm not annoyed but slow down and carefully overtake them if possible or just cycle behind slowly until there is a safe opportunity.