competitors are the 1500+ altcoins that are out there which also happen to have very unique names and started from scratch even though they forked the code from some other project. and they never claim to be "real bitcoin", they sometimes claim to replace bitcoin which is bullshit but that doesn't make them scam.
but when a coin which is NOT bitcoin tells everyone that it IS bitcoin, that makes it scam.

with that said, unfortunately the exchanges which earn money from fees,... sometimes don't care about these things. and BCH has a decent volume which makes enough incentive for places like Coinbase to keep it there.