A lot, probably most, of my hours on steam are from before they tracked it. I had 3,000 hours in CS:S and it shows 0 because I stopped playing long ago. Steams been around for a long time, much longer than its ability to track games, so I imagine there’s a lot of people with “unplayed” games that they’ve played, plus people like you that don’t show their hours for whatever reason.
There is historical record in the west going back to at least WWII acknowledging that area as Chinese territorial waters. Just because you only follow news cycles while they’re hot, doesn’t mean all of history prior to now stops existing.