Even if true, it has big downside...not listed on any reputable exchange
Yes it is. Karbowanec hasn't in Poloniex. Also in Poloniex did not want to start bitcoin cach. Only when he appeared on all exchanges except Poloniex. Then Poloniex launched a trade bitcoin cache.
Just look
https://coinmarketcap.com/currencies/karbowanec/#charts1000 dollars from the beginning of the year could turn into 70,000 dollars