Well said Old Fella.
I am all for giving the F/O "hands on" and often ensured that they got the more challenging leg if I thought that their handling skills were good for it, or would be improved by the experience without terrorising the pax.
If my name was on the flight plan, mine was the licence on the line, therefore it was always my ship; managed something like a ship with each crew member having specific responsibilities. It was not some hippy hugfest in the forest. Constructive suggestions were welcomed, as were tactful pointers to my errors (and there were a few). But any smart arse point scoring attempts were smacked down, usually by withdrawing 'leg for leg' privileges for a day or two, in order to better hone my skills to the level expected by the ace in the right seat.
Fortunately I only had to do that a few times over many years. Generally it was a case of sharing leg for leg with many a fine First Officer.