Well I wish Apple all the best of luck with the new MacBook 16, good luck getting you hands on one due to the chip and logistics problems going on. Reminds me of some 20 year ago when Apple was taking a year to deliver a Mac powerbook top of the line computer. I will continue to use my MacBook Pro 16 i9 for many years.
By locking down everything with no upgrades, you are pretty much on the path of Apple dictating when you will need to up date you computer just like the iPhone.
Will Apple do well with the New MacBook Pro 16? Yes they will but the long term value is now gone, And resale will go into the waste bin. When I can build a state of the art desktop computer for under $3000 that will last me for over 7 years with Windows 11 and have a $650 Chromebook for portable use. I am no longer seeing a great value in Mac Hardware sales.
I will most likely still buy a low end used Mac mini down the road just so I can use Mac OS for my personal business but everything else I once did on the Mac is moving on to other system platforms.