The article dives into exactly that quite a bit.

And it's not some mantra or "special thing" really - just get dressed so that you're not wet or cold and you can enjoy the environment no matter what the weather is.

Warm gloves, waterproof boots/shoes, warm upper body clothes primarily. That's it. I find it nicer to focus on layers on the upper body since it's easier to add/remove according to activity etc, than lower body, and it'll affect the lower body temps more than warming the lower body will affect the upper body.

That's certainly true. Although some people who are either from or have gotten used to places where the weather is mostly sunny and temperate year round (like a lot of California) really can't imagine having to live somewhere with a lot of clouds and rain (even light) much less heavy snowfalls in the winter.

Alternatively "There is no such thing as bad weather, only bad kleather"

https://youtu.be/ua1FAlHt_Ys?t=232

And the same in Danish and AFAIK Swedish. I wonder where it originated or if it's one of those separate, but parallel occurences.

Yep, same in Sweden.