When the article starts with BS it is pretty easy to see where it is going. The calls aren't recorded, but the transcript is from notes written as the call was going on. It isn't some kind of "reconstruction" it is a real time written record of what was said.
What the call transcript does show is that Trump and the president of Ukraine had a conversation during which Trump encouraged the president of Ukraine to continue investigations regarding election interference by people in that part of the world in 2016. Just like Senators Menendez, Durbin, and Leahy encouraged the government of Ukraine to investigate Paul Manafort as a part of the Mueller investigation.
The idea that somehow an investigation into possible corrupt actions is designed for political purposes seems to only apply to Republicans. Wasn't the entire Mueller affair really just a political effort by the Democrats to help them win seats in the 2018 midterms?