[flukus]

That's a charitable interpretation and good advice, but they specifically say "Only learn something new when forced" and give two examples 25 years apart. It certainly sounds like they aren't learning technology as it matures but literally as they are forced.

[tastroder]

I don't know why so many people here assume that learning something ages ago and sticking with it is mutually exclusive to learning anything tangential. Those two examples are programming languages and their accompanying ecosystems, not switching those for 30 odd years is not an indicator of having stopped learning anything.