Or did this merely replace 500 hours that would have been spent watching TV, Netflix or other types of entertainment?
The word addiction has a real meaning with some clinical ways for a trained person to diagnose somebody as having it.
I think of addiction more like alcoholism. Sure video games are engineered these days to be huge time sinks but that doesn't make it an addiction. If you can drop it (like you did) and it doesn't impact your life, its not an addiction.