I personally wouldn't buy that altcoin even if I knew it would explode with the price (which of course won't happen), for the reason that I am one of those who will never support those behind the attack on Bitcoin. If profit is your only motivation, there are many other altcoins that have the potential to be worth much more in the future than they are today.
Bitcoin Cash isn’t really an altcoin — it’s a fork. What does that mean? The name “Bitcoin” or “Bitcoin Cash” depends purely on which chain has the longer proof-of-work. If Bitcoin miners ever switched to BCH, that chain would instantly become the “real” Bitcoin.
Is that scenario realistic? It actually is, given how centralized the hashrate is among a few major pools. Here’s a fun “conspiracy theory” for you: imagine Trump putting pressure on big miners whose shares are traded in the US. They band together, fork Bitcoin, and push a “Bitcoin America.” The hashrate follows, the White House gets its own version of Bitcoin. Sounds wild? Well, that’s how consensus works.