https://www.youtube.com/watch?v=87dH1H-jF2w
I found watching this fascinating, doing some maths autism on the games market again but looking at the searches and comparing it to the steam data makes you think. The keyword searches are probably a fairly accurate gauge of interest in these games because even with botting it's probably going to account for people looking up things like guides for the games and generally searching it up.
As opposed to steam where yes, people will buy the game in question but then it will be dead as anything if you actually log into the multiplayer or you find it's completely broken and there's something deeply suspicious about the reviews.
I don't like google searches as data point. ROP was considered a great success at the time because a company calculated the amount of searches but it turns out that if a game or movie sucks while having high expectations searches go up.
Sure definitely flawed if you're looking at it from a research perspective, but I've found it interesting comparing these search results with pirated results as well as steam itself. Even if it's games that I don't like myself, I can at least agree with the results a lot more than I can with steam.