The most reasonable time, effort and cost to get this experience would be an Xbox Series X. There are a few graphics optimizations compared to the PC version maxed out, but you get 99% of the way there.

As for actual PC hardware; any current-gen GPU you can get your hands on will do, the faster the better. Preferably with an Intel processor for the highest performance possible.

isn't AMD Raizen the fastest nowadays?

Not for Flight Simulator and some other games.

I posted this in the main thread but in case you don't see it, the quickest way to try it out is via Xbox Cloud. You need an Xbox controller to play it, but then it just streams to your Mac/PC/iPad and IME worked really quite well

Can you use the keyboard also? And joystick/rudder hardware? I mean in addition to the controller.

Not as far as I know. Maybe some Xbox approved devices might work?

The specs are in the description. It's a pretty standard high end gaming machine, paired with some oversized monitors. You could easily pull it all together for under $5,000, and even make a few cost saving compromises to lower the price.

So the GPU shortage is no longer a thing?

Prices have been collapsing for at least a month, and it only seems to be getting better (or worse, depending on which side of the deal you are on). Retailers are having a very hard time unloading their 30xx stock because 40xx is right around the corner, and NV is likely slowing down the 40xx rollout to give their partners more time to get rid of stock before it becomes worth even less.