He literally did nothing in this. If Trump had not called Ukraine and pushed for an investigation, would you at all be concerned with Hunter Biden getting paid by Burisma? You wouldn't have even known. Did Hunter Biden tell him to withhold money? Did Hunter Biden tell him to keep documents from the House? There is absolutely nothing Hunter Biden did that has any relevance to whether Trump committed impeachable offenses. NONE
Do you need to talk to O.J. Simpson to know whether or not Al Cowlings broke the law by aiding a fugitive? No O.J.'s crime made O.J. a criminal, it didn't mean Al had to commit one. It is immaterial to whether or not Al Cowlings committed a crime. Hunter is immaterial to whether or not Trump did something wrong.
If your argument is that what Trump did was not wrong, that's an argument to have. If it is that he did it, and it's ok to do it, that is an argument to have. Whether Hunter Biden means a single thing is not.