That's called 'shooting the messenger'. It is not a good idea for those who want to be open to different opinions, a fact which actually can be gleaned from the linked article. If, as you say, 'everyone flags it as spam' it would be good for 'everyone' to read the linked article. That does not mean you need to agree to everything written there, by all means disagree but do so on the base of reason.

I think the author confuses reason with common sense anyways. They're not the same thing.

That's... rather poor behaviour on your part, no?