Canada

I don't agree with attempting to rationalize bad legislation, even if the specific example used by the journalist / source is a bit weak or unclear.

Your bringing in the "KKKonvoy" is a good example of why. I don't think it's accurate to draw a parallel between everyone who supported that, and white supremacy. Similarly, I don't think anyone with a Palestinian flag is a Hammas supporter -- but there are many who do, likely enough that the cons would add it to the list. Allowing government / media to dictate what symbols are good/bad, is authoritarian.

In regards to the example used specifically though, there's a reason for it I reckon. Legislation is often written with different intentions / examples and attempts by politicians to clarify what they mean -- which's likely why they're using the nazi examples as part of it. The source is noting that it's how it's written now but that it can change based on the discretion of various groups. Ie. They hold up a sign saying "We're against Nazis!" to make people ok with the authoritarian push; later that legislation can be changed to "women's rights activists are femi-Nazis! Add em to the list!". And while that may sound 'crazy', again, we have a literal contemporary example to the south.

Even more, you're focusing on an example fairly late in an article cautioning about authoritarian creep, but the subject of that example is fairly tertiary to the point of the article.