The torque of a direct drive motor is now superfluous. A quiet
environment is far more critical. You have to isolate the platter,
tonearm and cartridge from everything. IMHO this is far more difficult
than cutting a lacquer.
Since I've had to set up a mastering operation from scratch I cannot disagree with this more. A lathe has to be isolated too. My setup is pretty old- a Scully- and yet it has a table equipped with adjustable points for feet, plus an isolation base, both made at the same time as the lathe, which was the early 1950s (so if anyone tries to tell you that points beneath your equipment is snake oil, you now have proof that the industry thinks it is not). All the stuff you have to do standing on your head to make it work and not freak out if you look at it cross-eyed is ridiculous. Cutting pressure, track ball height, stylus temperature, tangential-ness, bearing noise (the bearings need frequent greasing and should be warmed up for 20 minutes before making a cut), controlling cutter resonance... I can go on; not to belittle your comment but really its pretty amazing that the technology (record and playback) is as good as it is!
Atmasphere, in some cases it might be because they work better:)
We've made a belt-drive machine for over 20 years. I'd put it up beside any belt-drive made and no worries expecting it to keep up; you can walk up to this machine and thwock the platter while its playing and not hear anything significant through the speakers; the platter is damped, the plinth is rigid and dead, it has a powerful drive and the motor itself is a significant flywheel. Its very neutral. But I think Technics makes a better turntable (and for less money, but I'm not a fan of their arm) so we're not making our 'table anymore...unless someone begs us :)