I even went back to check the post date, but it’s from today and yet they do have a “book a call” button. I don’t get it. Is this just marketing?

It's addressed in the article.

“ No sales calls, except for a short 'discovery call' if absolutely needed.”

But it’s the default call to action for bigger inquiries

	▲	ezekg 5 months ago \| parent \| next [-]
		In my experience, most enterprise leads will still cold email you with their requirements. It's relatively rare for me to receive a cold booking or cold trial, but this is there to not lose those leads who would otherwise not send that cold email. The point of #nocalls is to dip out of the dance, not all communication.
	▲	ziddoap 5 months ago \| parent \| prev [-]
		They still provide a price and the call is optional.