The fact a coin is traded somewhere doesn't prove if it's a legit coin. Bitconnect was also traded on many exchanges and was a scam coin. I don't compare Bitconnect with Minter but a coin listed on exchanges doesn't prove anything.
In addition, most PoS coins with high returns are often ending up as dumped shitcoins because all the stakers are trying to sell them but there are no buyers...
I agree with your remarks. But it is important how many real services will be launched on the platform. Services that can be used offline. In Minter already has the service allows to buy products without changing the BIP on Fiat currency. There is a service that allows you to buy food in McDonald's for BIP tokens (only in Russia yet). And a lot another services that help users like exchanges, telegram bots and so on.