A similar story repeats with every generation of new tools.
I trained at LHR without A-SMGCS where every aircraft has identity, and inbounds have parking stand. In the old tower the secondary failed for a week or so, those who had only ever known controlling with it struggled, those who knew ops before it was introduced took a session to get back into the swing of things.
Now it is so integral to operations that we would consider putting flow restrictions on if it failed in the same way.
Same with electronic strips. As those of us used to using paper strips at LHR become the minority, paper strips is no longer considered an appropriate fallback mode.
This, of course, puts more stringent requirements on resilience for those pieces of kit.