In repsonse to the long-standing issue with the screen registering phantom touches and showing complications, if Garmin are not able to find a fix for the problem perhaps they could implement a toggle for touch-to-wake?
My previous WearOS watch had this as a function, in the same way that gesture-to-wake can be switched on or off.
I'm aware of the auto-lock feature, but that requires a lengthy button hold to unlock which can be quite annoying.