Very weak arguement.....we dont understand so it must be aliens ....or Jehovah's toilet light going on and off.
You must not have read the article. None of the scientists quoted are saying that it "must be" aliens. But, they said that there were enough factors and evidence to at least consider that hypothesis.
Allow the scientific method to run its course before you ridicule it.
A quote from the article: "To be sure, both Boyajian and Wright believe the possibility of alien megastructures around KIC 8462852 is very, very remote. It’s worthy of hypothesis, Wright told Slate, “but we should also approach it skeptically.”"