The source links in that website (which looks like clickbait) do not support your claim.

https://www.morningstar.com/funds/spacex-ipo-how-index-funds...

> S&P is reportedly considering a fast entry rule change to its flagship index, though it has not yet been approved, and details are scant.

> FTSE Russell is also considering a fast entry rule for its suite of US market indexes and is in a consultation period as of early April 2026.

Only Nasdaq 100 has changed its rules, but Nasdaq 100 is not (and should not be) in most retirement funds.

If 1/3 having changed rules and 2/3 considering changing the rules isn’t evidence enough then not really much to discuss here.