I quite often listen to Crypto Youtubers and here are some observations I would make:

(1) Many are knowledgeable in Technical Analysis (TA) and day trade. This is a risky business and personally I stay well clear but if you feel you can learn TA and play the game then go ahead.

(2) Many are now promoting sites that allow shorting and longing of Bitcoin and other cryptos with intial signup incentives. This is even riskier than general crypto investment so stay well clear (in my personal opinion) and as they say they have a referral incentive is you use their link to signup.

(3) Quite often youtubers get incentives to promote coins and crypto related goods such as wallets. Many are upfront about this but others are not. If a coin is being pushed be careful but if you see the same coin hyped by many youtubers is might be worth a look but not when it on a huge move up. Wait until it corrects and if it does not then invest at your own peril.

(4) Some crypto youtubers dont really know much more than you so dont take one opinion. Question it and check with other crypto youtubers but ultimately be careful and make your own decisions based on your own research.

I am not trying to be negative about Youtube or Crypto Youtubers but instead letting those who are using them to be careful when spending money based on what they are saying. I have invested in a couple of coins promoted by Youtubers that did okay short term but long term look like they could well go to zero i.e. Fantasy Cash, Substratum (which some big Youtubers promoted) and Clearpoll.