Hey @Christian_Peer_
I haven't tried to disable these cookies explicitly but have tried to wait for user consent to initialise AMCV cookies using the opt in functionality in the ECID service extension. You can try out the same and see if it helps.
In my scenario, till the user consented, mid was not generated for the user and no adobe tool calls were sent through.
Hope the above helps somewhat.
Cheers,
Abhinav