The real danger about automation is that it is too damn perfect. If you fly 1000 single channel approaches and everything is normal, speed, attitude, altitude etc... Would you really be that careful the 1001st time scanning your instruments?
The answer is yes because it should be your trained response having had 1000's of hours in far less capable aircraft where you have to monitor and FLY THE AIRCRAFT !
Once the scan becomes an inbuilt and instinctive part of one's flying technique it should be there for good.
An individuals handwriting develops with time but rarely does it undergo radical changes
TR