I learned: sell all my Nasdaq etfs prior to June.

Garage -> Gavage?

Good question. I don't know, but I'll point out that different indexes have different rules, so someone would need to check if a change to the rules for Nasdaq indexes affects the others you mention. (Perhaps they follow what Nasdaq does somehow?)

My understanding: It depends on what index the fund is tracking. QQQ tracks the Nasdaq-100 so QQQ is vulnerable. VT tracks the FTSE Global All Cap Index so VT is not directly affected by Nasdaq’s choices but is still exposed to some extent because spacex is likely going to be in the aforementioned FTSE index, Nasdaq’s actions impact spacex’s market cap, and thus Nasdaq’s actions impact spacex’s position in the aforementioned FTSE index which in turn affects VT’s composition (to a smaller extent than QQQ’s).

EDIT: to be clear the above are just examples with two funds (QQQ and VT)

The claim is that Nasdaq is going to artificially admit SpaceX to the Nasdaq-100, an index they control, in order to win their business away from NYSE. If the index you invest in is derived from the Nasdaq-100, that's problematic.

It seems kind of likely that SpaceX would make it into most of the major indices on the merits, relatively quickly (the S&P has a 1-year waiting period), just based on its likely size and liquidity.

Yeah the ETFs have sold off their trust quite a bit in the past year. No longer can anyone with skin in the game trust the stewardship of the fiduciaries. They are simply showing that they are bad at what they do and people should not entrust their future to them.

Pull your money out of the target date funds and into a responsible mix of indexes.

That would be a fair representation if we were speaking about TSLA but SpaceX is clearly a military strategic asset. You buy the IPO, you help your government.

QQQ rebalances on a schedule. Existing holders are affected because the fund’s underlying composition will change.