SpaceX got NASDAQ to change their rules so I guess people thought S&P might be similar. NASDAQ probably did it because they make money by the listing going to them rather than the NYSE.
Did you consider they are adding SpaceX to the index because it is a good idea?
SpaceX going in the index is fine but I think changing the rule to make it different from other stocks is iffy and was at the request of Musk. There's a Patrick Boyle vid talking about it https://youtu.be/8rS3fTbC7TE
My financial advisor might have recommended that expensive fund to me because it was a good idea, even though he also received kickbacks from the fund for doing so. The point of being a trustworthy index is to avoid the perception of conflicted interest.