No. 2.
If a coin doesn't fall in price, there's only one thing that it can be known to. And that is for being a scam coin or ponzi. Usually scam coins doesn't have a downside in prices and they're known to keep the prices going up and that's what they're describing their projects.
You're right about the Ponzi.
But there are a number of actions that allow you to create such a coin.
The cryptocurrency market is transparent, and each project has a description of how the coins work.
If the coin is good, you buy. Bad reputation and description is a poisonous coin.
And it also depends to the person how he looks what type of coin is good. If he sees the price just goes up then he might consider it as a good coin to buy.
With that, he's going to lead himself losing money from that coin. That's why being informed and having the basic knowledge about what coin to pick is essential as people invest in cryptocurrencies.