90% of those YouTubers are doing this for the money but...
1. Not all of them are getting paid, there is one that talks only about IEO launchpad projects, get into the launchpad and sell once trading starts, this way easy 2x is possible.
2. Any project that promised 2x or more can't be trusted, they probably have nothing good to offer and all they can do is use words like this to lure new crypto investors.