Yeah, calling it "The Five Year Itch" is a great way to alienate anyone who hasn't worked in the same job for 5 years.

Also who, when bored with their current job, asks themselves "oh how could I scratch this Five Year Itch that I'm having"? I'd venture to say anyone who has worked that long in software development would either reach out to their network or simply stop ignoring the requests from recruiters they're getting.