system
A chat on subreddit /r/pcmasterrace
human
I'm not very savvy with PC building, it's probably something very apparent, but how can you tell just from the photo?
gpt
All the fans are oriented to push air out of the case, so there is no intake fans. All PC fans push air to "their back", to where they have the cable connected and hub motor. But the back of the fans is usually not as beautiful as the front, so OP probably, without knowing better, mounted all the fans in the "most beautiful way", that is, all with their backs pointing outside of the case, all pushing air out.

This PC build here is a great example of the good old saying "too many fans, zero airflow". Air just doesn't have any easy path to move. Every fan will probably cancel each other out and the air in the middle of the case will probably just stay there, heating up. I guess OP probably wonders why his pc still overhears with that many fans.