Yes! Every spring we open up our summer place and I have some Nespresso pods left over from the previous year. I always expect it to be terrible but find I can't tell the difference to fresh. Still, regardless of age it's just not that good to begin with, unfortunately. I get it for myself when I'm in a hurry or others who don't seem to care.

Oxidation is only one component of flavour degradation - that said, its the dominant one. So while the pods would be much better than a months-opened canister of folgers, certainly (as sealed canisters are also generally nitrogen or CO2 flushed), there are other aging processes that come into play. Pods also just don't have the best beans - and if you're grinding your beans fresh, you're probably also buying fresh beans, of better quality, from a smaller roaster.