No. Child Status Protection Act calculations and family eligibility depend on the individual family's dates and the specific petition timeline, regardless of how the investment opportunity was sourced.
Apply the same individualized family review
Record each person’s actual relationship and relevant dates. Eligible spouses and unmarried children under 21 may be derivatives, subject to applicable CSPA analysis, without a separate principal investment for each derivative. Apply the rules to actual petition and visa-availability facts rather than a promoter’s general promise of family inclusion.
Compare civil records early; a difference in spelling or dates across a birth certificate, passport, and marriage record can slow later processing. Derivatives receive conditional permanent residence alongside the investor, which means work authorization without any dependant restriction and a path to removing conditions with the family. Statutory provisions exist that can, in defined circumstances, subtract processing time from a child's age for this purpose, and whether they help a particular child is a calculation for counsel rather than an assumption. For a younger sibling, the calculation should be revisited as the case moves, since the monthly bulletin's cut-off dates for the applicant's chargeability can shift the timeline substantially in either direction.