[larrys]

"when you have no skin in the game"

Your parent is referring to perhaps (similar to) talking heads in a way that they get on TV not knowing all the facts or reasoning and state after the fact what should be.

But even if they state "before the fact" there is not a complete record of their thoughts on everything as being vetted as correct (success has a million fathers etc.)

So you can go back and say "see I said this was a bad idea" but what about the other 20 things someone says that you don't have the same outcome? You can just cherry pick. There is a common stock ruse that works this way. You call people up and say "I'm giving you a tip don't buy now". Then next month you call back all the people that you gave "tip a" to but not failed "tip b".

That said there is much to learn from criticism no matter where it comes from or what their axe is to grind etc.