There may well be anecdotal evidence to support your contention, however I would like to encourage those of us over 40 to be among the exceptions rather than to slide back into a comfortable stereotype.
What I would add is that it might be more accurate to say that both groups are comfortable with technologies, but not necessarily with the same ones. This can work in both directions. For example, an older teacher might be more comfortable with a manual typewriter or cassette player than a younger teacher, and these are still around.
I think we also need to be judicious with our use of all technologies. “New” doesn’t always mean “better” or “most appropriate”. If you saw my earlier comments yesterday, you will be aware of the many problems here (in Taiwan) of trying to include IT & other technologies in our teaching.
While IWB’s, wikis, m-teaching, etc are nice and new (for now), they don’t invalidate other approaches. I can still use flashcards, games, drama, songs, chants, cuisinaire rods, puppets, realia, drawing, TPR and any number of other tools to be effective.
If you have an illness and go to a doctor, you don’t always get a heart transplant operation. Sometimes, you get some plain old paracetamol and instructions for taking a rest. In the same way we should select the best tools for learning, whether high- or low-tech.