"Every source of information is tainted when it comes to topics where political interests play a role." This times 100. Politics tends to cover things that are

"Every source of information is tainted when it comes to topics where political interests play a role." This times 100. Politics tends to cover things that aren't readily testable in scientifically repeatable ways. So decisions must be made on principles or ideologies which shade every topic. And since people are now basing their decisions on unprovable "facts" or claims, the line becomes fuzzy on what to believe and not to believe. So people tend to believe what reinforces what they already believe.