I love nepotism. Just like I love capitalism and darwinism. If you're shit and your bloodline is shit, you won't come far. I think Oda balanced it quite well. With thousands of CDs who are literal fodder while there's other with exceptional traits and conqueror haki. Same with humans where you have freaks like Meme or WB but most being fodder.
It has to come from somewhere. There's very few Rockefellers in one piece and those who exist are exceptions that prove the rule.
All cool and valid except for goofy. Who gets literally everything for free for MC sake