The 400-page report debunks claims by the president and his allies that political bias played a role in the FBI's decision to investigate members of the Trump campaign for possible coordination with Russia. The inspector general also said there was "no evidence" the FBI placed any undercover sources or agents in the Trump campaign or had them attend campaign events.
https://www.documentcloud.org/documents/6571579-FISA-120919-Examination.html
I know time is a difficult concept, but January comes after December. This ruling comes after your sourced document. Furthermore one man concluding there was "no political motivation" doesn't make it a legal authorized warrant. The two concepts are not exclusive, even if true.
"The FISA court's top judge wrote in a secret ruling on January 7 that at least two of the four spy warrants against Carter Page were invalid and not lawfully authorized."
https://thefederalist.com/2020/01/23/breaking-spy-court-admits-fisa-warrants-against-carter-page-were-not-valid/
I suggest you go back to your safe space where you can delete anyone who makes a good argument against you. You will see no joy here.