If they have the ability to improve it before the units leave the factory, why not? Look at how much bad press Intel and Qualcomm has received over Meteor Lake and Elite X. MTL is much better now than 6 months ago. Leave it in the oven until it is baked.

Probably drivers are "rubbish", and want to wait until they are "still rubbish, but not as bad".
Drivers will be more or less "OK" in a year or so.