I've read it. Nowhere does he say the aliens tried to contact us. His thesis is more or less that it is a bit of alien space junk. The point being that natural explanations of the phenomenon are not at all convincing.

At this point we either ignore it or try to have a closer look at the next one.

He is in favor of the second option.

If you want to ignore it then you still have to give a reason why you want to do that.