411A, nobody has ever said that you should allow handflying skills to degrade. In fact, I have been at pains to point out that we should keep ALL our skills up to date and proficient.
You are perfectly at liberty to disagree with people here. But I will not permit you to refer to the offerings of people with whom you disagree as either nonsense (please not the spelling) or as BS.
And if you are unable to get some input as to how the FO likes you doing things that are not immediately necessary and do, however, you dress it up, erode to a certain degree the margins of safety, you have no right to call yourself a professional pilot.
CRM is all about keeping all the members of the team in the loop. It is about ensuring you use all resources possible to bring the flight to a safe and expeditious conclusion. It is not about you "doing it this way because that's the way I've always done it and I've never had an accident yet".
Like it or not, if you give your FO the feeling that he has no say whatsoever is how the flight is conducted, you WILL cut yourself off from an essential source of information and assistance if it all goes pear-shaped. This is NOT good CRM. Time to learn that lesson. If you can't learn it, then time to retire.
I am still waiting for your confirmation that you understand the rules of how this forum operate.