Why are You tubers using the statement that NordVPN can safe crypto investors from getting hacked?
It's your keys, it's your coins or with HD wallets, it's your mnemonic seed, it's your coin.
If you lose your wallet private key or mnemonic seed, you will surely lose your coins to hackers. You can not be safe with any VPN software if you already lose either your wallet private key or mnemonic seed.
Most importantly, you misunderstood between Security and Privacy. VPN can provide privacy, but not security.
Bitcoin privacy resources.Bitcoin security resources.