I've recently started comming across a popular antenna design in the DIY community, which looks similar to the traditional Yagi-Uda antenna (large reflector at the back, driven element in the middle and several directors at the front), but instead of straight elements perpendicular to the direction of the antenna, there are coaxial discs.
For the sake of discussion let's consider this particular design (exact measurements and videos in the link):
I don't know much about antennas beyond the simple dipole and I haven't been able to find any information about this style of Yagi-Uda, so I wonder: Are there any benefits/drawbacks for this disc style as opposed to the conventional rods? I'd assume, that this antenna would be indifferent about polarization (as long as the signal is linearly polarized), but at the cost of gain? Perhaps there would be more noise?