Nobody is retiring - why would you, you get a fat pay cheque and once you get out of the meat grinder Jr levels life is pretty good. Oh and if they fire you rather than you retiring, they have to pay you another stack of cash and keep those options that vest in a few years.
"Seeing people posting about being laid off after 30 years of employment at Microsoft is a great example of corporate loyalty." - is this just a clean out of the expensive old folks after the hiring spree of late? Is it last in first out or first in first out? These are much more interesting discussions.