The person I was responding to was speaking to the fast-track concept, which has been a thing in CRSP indexes for a quite a while.

The float requirement changes are directly due to these huge IPOs only placing small amounts of float on the market. Their goal seems to be tracking the market and making this change prevents them from excluding two notable companies from their indexes.

IIRC CRSP indexes are float-weighted so they aren't going to attempt buying a ton of these IPOs anyway due to that low float.

Again. Would I have made the change? No because placing that little float on the market isn't kosher IMO.