It is a 3 hour long game with 4k or so reviews.
Life is strange original has 70K reviews and is 14 hours long.
The remaster has 4000+ reviews and again, is 14 hours long. These games are also all time favourites that fans do replay from time to time. If has more replayability than mixtape, despite it being fairly linear.
A 3 hour one time only game does not retain players on the charts like a game that takes multiple play sessions to finish. Or a game like "tennis elbow" which has far lower max concurrent (like, nowhere near the concurrent max mixtape has) but is a sim game that if it's your jam you will repeatedly come back to.
Its very simple - it's not a game for you, and you have to understand that these types of games absolutely have their niche fandoms who love this kind of stuff.
There is no conspiracy here, artsy titles like this have always, across all mediums, got a disproportional critical appreciation vs more traditional titles.
It's just the same old story. Yes people do like these games. No they are not the majority. Yes you can just ignore it, no it's not a conspiracy.