I'm planning to call for service. I'm not happy that a $1000 washer in 2020 sounds like this. Of course, I do have a concern they'll tell me it's normal -- in which case, I may be testing their customer service commitment, because I would've gone for the Electrolux, which also has reversible doors. I do love the dispenser and everything else about the unit.
Interestingly, I am finding the noise is evident when you simply spin the drum by hand. You can hear the groaning pretty clearly.
The UltraFresh Vent cycle, the washer's marquee feature, spins the drum off and on at a moderate clip for a few hours -- and then this groaning noise is louder due to the increased speed and gets really annoying.
Agree on the Maytag Neptune comparison -- we had an MAH7500 that came with the original motor/control board (I swapped it later with warranty parts) and it sounded very similar during start-stop, but I don't recall it getting so bad during spin. However, that was a long time ago!