Earlier quoted context omitted.
>All that an inclusion of these new companies would accomplish is a bailout of their stockholders by pension funds and ETFs where millions of regular people shoulder all the downside risk. Carvana is the poster child for this. It's astonishing that a company with a history of shady practices, and that has yet to offer a convincing explanation for why it is not a scam, is part of the S&P 500.
Ah, so you'd like the passive broad market index which contains the 500 biggest good companies? Do tell us if you find one I guess.
And a reminder: not just "good" now, but good over time.
Good companies turn bad (Apple almost went bankrupt), and bad companies can become good (see again Apple; in the UK, recently Rolls-Royce).