@lewm , We fully agree that a low compliance cartridge benefits from a high mass arm. Stylus shape and VTF certainly influence record wear. However, given the same stylus shape and the same VTF the low compliance/high mass combination will have accelerated record wear vs the high compliance/low mass pair. You and I both prefer higher compliance lower mass combinations.
My aversion to direct drive turntables comes from pretty extensive listening tests back in the late 70's early 80's. The universal opinion was that direct drive turntables sounded inferior to the best belt drive turntables. There were various theories of why this might be, none of them proven that I know of. I do know that isolating the turntable from everything else going on around it including the music is very important.
The degree to which suspended turntables do this is pretty easy to see and measure. Consequently I will never own a direct drive turntable and I will never own a turntable that does not have an adequate suspension.
I have one more issue, fuel to add to the fire. Turntables are a prime target for flippant design, The Clearaudio Statement is a great example.
There is no advantage in making a turntable look cool. It is just a total waste of money. It has nothing to do with sound, purely visual. Mechanical artwork. Other manufacturers followed suite. IMHO the very best turntable made is the Dohmann Helix. Still very expensive but plain, unassuming in comparison to other tables in that price range. I also think Mark Dohmann has the right approach to turntable design.
I'm sorry if I seem to be a stuck record when it comes to the influence of a motor near a cartridge. Electro-mechanical devises have a way of influencing each other especially in close proximity. If you put the close together no amount of shielding is going to stop that interaction.