Watching Fortnite/Minecraft/Roblox videos all night is a zero sum activity... you might get better at the that particular game, but it's a useless skill for 99.999% of us (child labor issues aside). On the other hand, if you use that time learning an actual skill or absorbing general useful information, I think there might be an argument that it's time well spent.
When we are young, we have an incredible ability to grind on things, especially when sleep deprived. As we get older, that becomes much harder and our productivity inevitably falls. I'm finding more and more that I have to go with my bursts of motivation when it hits and ride that wave as far as possible. A little sleep depravation here and there isn't an issue.
All of this falls apart when your life is negatively impacted and you are not adequately managing your health, responsibilities and/or achieving your goals. To sum it up, I don't think an "addiction" to useful information is a bad thing. We live in an unprecedented time of nearly limitless access to information. To have someone not only tell you the information you want to know, but also demonstrate it is game changing. Addictions are bad, but watching Youtube can lead to incredible learning momentum. Achieving that with a balanced life is something I personally strive for.