This simulator even has an authentic looking cabin door that you enter through, and a seat belt for the pilot seat. A bit of a glitch with the sim software itself, is where the plane flattens a truck crossing its path on the outward-bound taxiing (keep an eye on the right bottom side of the screen as the trucks are crossing).
If you think many of the knobs and switches are just for decoration, he has another video showing the exact start up sequence with those knobs and buttons being used. The landing gear lights, for example, do change colour and go out in a believable sequence.
But an incredibly well-done job that I’m sure will give many years of pleasure.
There is also this example of a 6-year long project to convert a real 737 cockpit into a workable flight sim at https://youtu.be/YaGVz9wZBis?si=yIdy6wVAK_dOf8JQ