Being "kept away" from Black Square's aircraft because you can't pull the dipstick out of the oil filler neck is nothing short of ridiculous. Where do you draw the line? Lets say that feature existed, so you checked the oil and its a quart low? What are you going to do? Open the tablet and press a button that adds oil. But even if that existed, somebody would complain that clicking the button on the tablet is unrealistic, and that Nick needs to implement a virtual bottle of oil that you can pour into the engine because "most piston pilots don't have a tablet button that magically puts oil in the engine." I certainly don't want to speak for Nick, but when you're developing aircraft at this level of fidelity, I'm sure you really have to prioritize where your efforts go to achieve the desired outcome.
His Starship is, quite literally, a marvel of modern simming. He could've invested time in making all the cabin window shades, tray tables, closet doors, and toilet system work. Instead he gave us the first ever complete simulation of a VLF-Omega ever seen in the sim. Priorities.
This guy literally invents technology that has never been seen before in the history of flight simulation to circumvent simulator limitations and pioneer realistic behavior and systems in his aircraft. And yet not being able to pull a virtual dipstick out of a virtual engine is enough to steer you away from that.
To each their own, I guess.