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.
I'm not sure about 90% as we don't have the stats to connect that but I agree that many influencers are doing this for good, not just for money only. But most of these people are paid to make good and attractive reviews, they explain so well pretending that they are actually doing this in real life but behind this, it was a scripted action.
We don't let that happen to us and that is so important to make our own research and only to follow influencers that we know they can be trusted.