Personally I am really frustrated about these changes because they are making people lose faith over an financial instrument, some of the only ones which actively work for everyone included rather than only the large investors but they are changing rules minutely to bend towards it.

Index funds are still really great even after this I must admit, really scummy move by Nasdaq and Also S&P.

I think that personally I am interested in world stocks like VTI which can have a less sizable influence as compared to directly S&P 500.

Now, there are some other funds like Dimensional (DFA) which supposedly don't allow such rules of IPO's.

I think that dimensional is great, Any of the two are great if done with good taxation optimization but there is also the fact that there is enough amount of capital already in index that if SpaceX were to fall down for example, there would be impacts on Google/other-tech/Nasdaq (And maybe S&P stocks) that the difference might seem negligible

but the best part seems to me the fact that you wouldn't be forced to buy an bleeding company at a really expensive price when you might use dimensional.

Both seem great to me, I am still a bit sentimental to Passive investments, I hope that there are better regulations kept to prevent such blatant amounts of corruption within the markets.

It also depends on your risk factors as well. I would be interested in hearing your thoughts too.

I recommend watching Ben felix's videos about these mega-IPO's and additionally Dimensional and index funds too.