That kind of scheme is already in the crypto-industry for a long time so others are now aware of it.
Before, it's easy to manipulate some of the low cap coins and shilling is effective. But on what I'm seeing today, there are only a few people now involving in a trading group signal or a group that shills a certain coin.
Many people just see the price pump and they started investing in it. In recent i saw many people when they saw Dogecoin pricevpump. They also started ingesting in it without research why price pump and either Dogecoin has any new partnership or feature launched. Price dropped very soon and hurts many traders..
There is nothing wrong if people want to ride a certain pump especially on Dogecoin but they should know the risks and try to avoid being carried away, either will buy at peak or still waiting for a much higher price before selling.