Agreed, I will almost always take someone with 5 years of experience at a couple of good shops rather than 20 years of experience broken up across 10 different ones.
Often the long-term guys I met are the shit guys who are coasting, still writing code as if it were 2005.
Worse still is when their language knowledge has coalesced around an old language version and they're not using any of the new stuff, as I've seen code bases that are entirely incompatible with new libraries.
Like all new libraries generally depend on DI, but all the code is written in static methods and classes so nothing can be easily injected and you get all sorts of threading issues when you try.
Also, I get what you’re saying, but DI was around in 2005 and some good engineers (older than I) were using it back then. It seems lot of good ideas skipped a generation!