I get the same things with a $500, when it is not on sale.
I tried an AVP and it was indeed better hardware just not $3000 better. For what it costs it should be able to dual boot or have a VM where you can run the latest MacOS. Yes, I have a MacBook Pro, and more Apple productions than I would like to admit. The MacBook Pro even cost more than the AVP. But it is a real computer and I shouldn't have to haul it around in addition to a $3500 computer in order to get a work environment.
The AVP is amazing hardware, that has little utility beyond a consumption device for someone with a strong preference for Apple products and money to burn.
If the AVP could run MacOS. I could see myself hauling it around in some situations with a portable keyboard and mouse instead of the laptop. For a confined yet safe space like an airplane, Amtrak, or hotel room it probably would be preferable. As a proof of concept I have used my Quest 3 with remote desktop from the MacBook, and a windows computer. It works pretty well. But not better than my dual monitor setup at my home office. And if I am away from the home office and have to bring the laptop anyway, except for back in the hotel room. The laptop by itself, or laptop and iPad, is the better option than puling out the lap and pulling out the headset. Or conversely if I am going to just consume content instead of work, the VR headset solo is the better option. But with the processing power in the AVP, Apple is making a choice for it to be a consumption device like the iPad instead of letting it be a real computer. It is a poor choice. I would wager it would highly likely increase sales if it could differentiate itself from the VR competition by marketing it as a VR workstation with a polished full OS.