Yup, except the exchanges already declared that BTU will be considered as an altcoin, so there's not really a lot of room for ambiguity at this point.
Exchanges don't get to decide if its going to be an altcoin. If the longest chain starts mining >1mb then it is what it is. Somehow I don't think
the miners will allow the minority chain to retain the rights to the Bitcoin name. The stakes are too high.
Who are those miners really and why we should take them seriously?
If they want to fork, good riddance to them. Once they branch off (and this is a big once, so to speak), they sever all ties with the old Bitcoin apart from sharing the same blockchain until some point in the past. After all, it is them who is going to fork, so by definition they don't have any rights to the name. But ultimately, this is irrelevant since why would they ever want to retain the canonical name instead of just sticking to what they might ever want to choose for a name (Unlimited, Undisputed, or whatever). The answer is simple, they have basically nothing to offer and bring forward. It is all about money, not about innovation or improvement