On most of the above I can broadly agree with you except . . . . . if you had sat alongside enough of them for long enough , you would not make the assertion that a 250-300hr pilot will "achieve the same end result" as a 5000hr one.
Some days, on some flights, with some Capt's alongside him Yes, but is by no means a foregone conclusion trust me
If you are sat in the back, who would you prefer to become your Capt if the old sod in the left pegs it ? answer that one honestly and you dissprove your argument, but of course, as you say, management don't care as long as the legalities are OK, but the public (if they educated themselves) SHOULD