I don't think it's a scam, but the price is very unstable.
Its unstable because of 2 reasons, there's someone spreading fud and a whale(s) are trying to manipulate the price to force those with weak hands to sell at discounted price, that way they can buy and sell later and another reason is the dollar value of Bitcoin. That also have an effect not only on MCO but across all altcoins.
Someones manipulating the price alright, but they're doing it by buying up several pages of sells at a time to create the illusion of growth and raise the buy offer until the illusion becomes reality. But without legs to stand on, the bears will tear it down every time, so they do, they take their profits, and the same dump truck of money comes back to prop the price back up again, and the process repeats.
I actually haven't seen much MCO fud. I'm probably the most vocal MCO critic I'm aware of and it's not like I have a huge audience.
I wish MCO holders the best of luck, truly. I have some myself. But I think there's some pretty glaring issues to address.