It has been ten years since this Israeli started to let his dreadlocks grow. That is when he stopped cutting or brushing his hair. He was wearing the Kotel handout head cover on top of his piled up "dreads". To put the tefillin on I had to open the top knot and make the strap a foot or more wider than normal and then, after I got the strap past the locks, I had to make it small again so it would fit his head... and I had to do it again to take it off.
Why would someone do such a thing? It doesn't bother me… he is free to wear his hair as he likes, but it seems to me to be a lot of extra work... carrying that extra weight on his head all day long. Looks like he wants to make some kind of statement. Maybe, "I'm different," maybe, "Look at me". I really do not understand the headspace. He was a nice enough guy, really, but again, why does he want people to look at him like that? What's keeping him there all these years?
Now that I think of it, I bet lots of foreign visitors ask the same kinds of questions when they see my payot (sidelocks) flying.