The project creator explicitly said that their creation cannot be styled, at all. It renders the exact same "standard" way on all devices. The retort was that the vast majority of people (with a clear callout to companies that would obviously like their own branding) do not want a web where every site looks the exact same, which is why CSS exists in the first place. You seem to have read/decided to turn this into a discussion about end-user customisation of sites (and, frankly, a thinly veiled rant about Facebook and Medium), when that first of all has nothing directly to do with what was being discussed and second of all would also be out of scope for this project because it had styling itself out of scope.
