as a rule of thumb any altcoin that has the name "bitcoin" in it like "bitcoin cash", "bitcoin satoshi vision", "bitcoin gold",... are considered shitcoins because it simply shows that the people who created these coins had no confidence in their own creation so they had to use the name "bitcoin" to gain some popularity because of bitcoin's popularity.
in case of BSV it is pure shitcoin because it has nothing else to offer! it is a copy of copy of bitcoin since they forked BCH and it is only created for pump and dumping purposes and for people behind it to make money from the companies they own.
On 1 August, 2017, Bitcoin Hard Forked implementing a lot of code into it, one of the biggest implementation was Segregated Witnesses. To get more specific about Segwit, it basically separates the signature data from the transaction data and creates two hashes: first hash of just transaction data, without the signatures; and second a witness hash consisting of a hash of both the witness data and of the transaction data. Bitcoin uses a Merkle tree for storage in a block to efficiently store transaction data, and puts the Merkle root into the block header of every mined block. SegWit creates another Merkle tree to separately store the witness hashes, but importantly, does not requires nodes to keep the signature data.
Now, if I don't have to, why should I keep the signature data? It is much cheaper to just drop storing the witness hashes, let somebody else do it. And how this is Bitcoin if I have to rely on a third party to store the witness hashes? Wasn't decentralization the first reason Bitcoin was created?
This way, on 1 August, Bitcoin was hijacked, forking off Bitcoin Cash.
On 15 November, 2018, BitcoinABC hijacked Bitcoin Cash network using rented hashing power (
https://www.nasdaq.com/press-release/unitedcorp-launches-suit-against-bitmain-bitcoincom-roger-ver-kraken-bitcoin-exchange-and-others-20181206-00743), thus implementing a lot of code written on knee, with ridiculous content such as The Wormhole Protocol and Wormhole Cash, basically transforming Bitcoin Cash into a securities platform, without legal tender.
There is only one Bitcoin.