People who defended Conor's loss against Khabib used the argument that Mcgregor was already rich at the time and wasn't motivated, and stated that "Motivated McGregor" would destroy Khabib. People were so amused by this that they started using the term as a joke to mock McGregor fans, often using the term to describe McGregor in an almost Godlike way.
Working backwards in logic, disregarding the facts in order to support an erroneous conclusion. Motivated reasoning is in contrast to logical reasoning.
I know you're telling me the fact that Saddam Hussein had nothing to do with 9/11, but my motivated reasoning tells me he did.
We invaded Iraq because of 9/11. What we did in Iraq was right. Saddam Hussein was involved in plotting 9/11.