I haven't looked at the discussion but will say one of the most fundamental problems of LP playback is consistency from cartridges.
They are small and bonded and use polymer suspensions/dampers.
Frankly this means variability of stylus alignment and temperature dependance are pretty well inevitable.
The more "sophisticated" a stylus shape the less tolerant it will be of misalignment.
The Ortofon Replicant I have mainly used for decades looks incredibly sensitive to the tintest misalignment if the large perspex model of it in which my 3000 mk2 was delivered is anything to go by.
Hand made cartridges probably vary the most. OTOH they are mainly very expensive so out of line units can be thrown away and absorbed in the price since cartridges contain very cheap bits assembled into very expensive products
exotic cantilevers and stylus profiles excepted.
Plenty of scope for jewelled or exotic wood bodies in the price...