Confirmed: No "physical" phone regardless of manufacturer can do >3 adhoc audio con calls

The below has been confirmed with Zoom tech support:

Zoom had a hard limit on 3 ad hoc audio con calls. in October of this year 2022, they raised it to 10.

However, that 10 number is only for the soft phone or mobile apps. Any physical "phone" from poly, cisco, etc.; are still limited to only 3 ad hoc audio con calls.

Zoom is working to get this address in 2023, but there is not a firm timeline as to when it will be addressed.