1. You are right . It is   ANN | BITCOIN VAULT Listed on Coinneal | HIGH HASHRATE 1400PHs | POW SHA256
2.  these are the only exchanges that listed this altcoin"

Coineal
MXC
Liquid
Hotbit

I wonder why it is only listed on these exchanges? besides why the hell use the bitcoin name instead of creating another name?

-> It is new coin , begin on Dec 2020. So only listed 4 exchange until now. But volume is big

https://coinmarketcap.com/currencies/bitcoin-vault/markets      volume more than 1500 BTC per day

https://bitcoinvault.global/   please see road map, they will list more exchange Q3 2020


3.   besides why the hell use the bitcoin name instead of creating another name?

-> Name is BTCV ,  BTCV have all BTC have, but they will have extra level of security based on a three-private-key security structure . They want to become bitcoin 2.0 so they choose name BTC.

4.  Get BTCV May 26th :    https://i.ibb.co/5xjkDkM/btcv2605.png