CRSP did change their rule earlier in Feb, where they added a clause that later allowed SPCX to be included, despite having <10% float. The clause allowed SPCX to be included because of its market cap. The timing is also suspicious.

Source: https://www.crsp.org/crsp-market-indexes-changes-to-float-sh...

Free float rule was pretty low already for ftse, yea? Like we went through this with aramco still has free float under 3%, yet it's in vxus.