Many people don't support bitcoin cash, but I think it's a good currency to compete with bitcoin, transactions are faster and have fewer fees, what happens is that many are upset because it's a hard fork and criticizes saying they divided the audience and broke with the mass adoption.
It seems to me that in the near future there can be big changes in the ratings of altcoin and many Bitcoin twins will lose relevance. The fact is that today Bitcoin can not stand well on the market, and the current state of affairs of the crypto-currency market negatively affects the whole situation.
Yes, the big change you mean might happen. Many new altcoins have the potential to grow and have the chance to shift the old altcoin position. However at this time the market became very crowded and certainly had an impact on intense competition.