If you already own highly appreciated QQQ in a taxable account then your options are limited, since moving to a different ETF would realize the capital gain. It may be preferable to hold even if you think you're losing money buying SpaceX at an inflated price, if selling would lose even more in taxes.

If you own an ETF that buys SpaceX but without overweighting vs. float, then you're not contributing to the inflated price in that sense. You're still buying at the inflated price though, so the NASDAQ rule change still affects you indirectly.

I guess the point of the "wealth tax" comment is that any higher taxation of the wealthiest individuals would reduce their power to shape the rules to their favor, and a wealth tax is potentially harder to avoid than income taxes. I think most prior attempts just made them emigrate, though.