Do Turntables sound better with time?

Not surprising. As has been stared above it’s a mechanical device, and most mechanical devices break in as parts set/wear into each other. My BMW S1000RR was limited to 9000 rpm for the first 1000 km. Then oil change, tune up and the full 17000 rpm was made available.

When I swapped out my cartridge to the LVB 2M black, I reached out to Ortofon about the cartridge and break in time. They confirmed it needed time to break in so it would perform optimally. 

Seeing as how it’s a DD turntable, and the motor is directly connected to to platter, any micro vibrations would transfer and potentially smear the sound. Between that, and cartridge break in, what you are experiencing could be very real. That, and we adjust to what we are listening to over time. Think listening to a static radio while driving around. Our brains tune out the noise after a while,

Lots of factors.

And just ignore @jasonbourne52  Unless it’s a stone wheel with a wooden axle, it’s snake oil in his mind.

@secretguy 

thats because you didn’t plug it in

I followed BMW’s recommendation for breaking in. Plus, the bike arrived with the restrictions in place. Now, a 200hp bike that is that light is a rather “intense” machine. Again, when the motor was fully available, I continued -as they called it - breaking in the whole motor. Full throttle, 3rd gear was a rare event.