First of all, incivility is against community rules. Please do not do it again.
Secondly, “common sense” is the thing that made people believe the sun revolved around the Earth for thousands of years. Just because you believe your “common sense” tells you the truth doesn’t mean it does. So that’s a really terrible way to find out whether or not a source, especially one you’ve never heard of before, is trustworthy.
Ask any con man- the easiest people to con are the people who think they’re too smart to be conned.