I checked one of speedruns of Mike_Wasowski on Story Mode - PC but on timecode 0:35 you can see which he use dualshock buttons so he played on ps4 I this run should be rejected or send on ps4 category!
Also in main menu before run start doenst have exit game button (Выход из игры on russian)
On the PC version the game adapts the displayed buttons according to the joystick you're using, so if you use a PS4 joystick, the game will display Playstation buttons, the same with Xbox. Also, it's pretty unlikely that this run was made on a PS4 since the required time to skip cutscenes is pretty short, normally it would take more time on a console even with a SSD. About the exit game button i couldn't quite understand the issue or how it affects the run in any shape or form, still, i wish the runner @Mike_Wazowski , if available, to come here and address the situation.