$BCH isn't a scam, but it kinda is. BCash isn't a scam because #Bitcoin is an open-source project and anyone can fork it (and sometimes it feels that almost everyone did at some point). The software isn't the problem, it's certain people behind it that are committing fraud.
BCash came into existence as an attempt to strong-arm Bitcoin users and businesses. It was backed and funded by 3 people: Roger Ver, Jihan Wu and Craig Wright. Again: no issue with them forking off, their choice and they want to try to take a different route, which is fine.
It resulted in a centralized coin (3 main backers) with centralized development (3/4 different "implementations" by devs who lack experience and all funded by the same people) and centralized mining. Nothing special about it, although claiming it to be decentralized isn't true.
1/ Blockchain is a very sluggish thing. Many confirmations (= time) are needed to ensure transaction finality. It is inefficient because everybody sees all transactions. And we need to store all transactions for eternity (unless Mimblewimble is used.)
2/ But if properly implemented blockchains are of extremely high security. And the location of sender & receiver is irrelevant. This is _the_ killer app for which everything else is built upon.
3/ From this hard secure foundation we can build faster & cheaper payments (like the lightning network) that still carries almost the same security thanks to smart contracts.
1/ #Bitcoin is in a mania. I admit that. People are accumulating. If bitcoin was a typical investment, it would be setup for a 90% sell-off. But this isn't a typical investment.
2/ It's important to understand that #bitcoin is divisible to 8 decimal places. 0.00000001 btc = 1 Satoshi, the smallest unit (that the base layer will recognize).
3/ It's true, #Bitcoin isn't usable for everyday payments at the base level, no cryptocurrency is, but it is good at making transactions that are censored by credit cards and other payment methods. ie wikileaks donations, dark mrkt prescription drugs, etc.