I think you’re just refusing to see the logic that because impeachment is intended to charge an official for conduct and present the possibility that they may deserve to be removed from office, it only makes sense that acts which are cause for impeachment are ones we don’t want our officials doing.

So if I President commits a crime and is impeached, it is possible they may be removed from office for that crime.

So if the President then does a worse crime as a public citizen does it not stand to reason that they’re probably not a good fit for the job?