That's the point. He says it is bullshit, because turtles HAVE noses and not those weird sensors the original commentor was describing.
I did not expect to get into an internet fight over turtle noses today, but here we are. :)
There was another site I saw in my search that claimed they do have sensors under their chin.
I am not an expert, but a quick google search will verify the claims made in the OP.
And I’m done with turtle noses for the day.