From a dev analogy, this is why you have things like the "Android Design Guidelines" and UI / UX best practices. Yes, it's an open ecosystem, but there are best practice guidelines for a reason. If some lazy dev uses Sencha or Phonegap to create some shitty cross-platform app, consumers are going to have a rough time figuring out what the hell is going on. Similarly, if you have green Bitcoin signage with unfamiliar logos, you're introducing a level of confusion to the very people you are trying to target. Language itself is decentralized, but you don't see me going out there and spelyng thingz difrint just beacuz aye can.
Quote 100%.. just a matter of communication! But sure, everyone is free to do what he likes, if the community likes your work, it will pick it up!