My first thoughts were similar. Then I thought, if I built this it would be the same, everything accessible. Yes I can tweak anything and everything while it's powered and watch the far field! Not like ripping out a module and trying to get the glued baseplate off. Dust is not an issue. If it is, you can wipe it off. I don't have a class 1 clean room but then I guess nor do most of the module manufacturers either so an option to clean is a plus from my point of view. And to be honest, less glass surfaces between the diodes and aperture has got to be good. Anyway if I have dust problems I will post a comment, but no air flow through there and all wire access is sealed. Not on the sales team just thought it an interesting build feature.