Note the difference in color nearly new versus one year old lines. I do kite in California but I don't leave my lines on the beach.
To me silversurfers line look fuzzy. I see the same thing on my lines at the kite end. Presumably simply from sorting out the lines each time. That fuzz would indicate to me some broken fibers.
The line is fairly rough to the touch so if it rubs against itself you will get fuzz.
It is also a fairly open 8 strand braid and easily opens up in compression
I have lines on other bars that did not fuzz up like the the duotone lines, were smoother, had a tighter braid, and were stiffer.
I just bought some liros dc pro sk99 lines and they have a tight braid, are nice and slick, and are stiffer.
I agree with sliver surfer in that I see no wear on the lines going through the bar. And I don't rinse my bar after each session and I always launch from sand.