Personally I don't understand why they're still waiving crotch/leg straps--that seems like a much easier requirement to meet than the SAS seminar.
I agree. This was a mistake, IMO. The first year it was required (2014?) they were sold out everywhere and that was the basis of being waived. Then it probably got copied and pasted into new NORs. I've brought it up, and the consensus is it will not be waived in 2018, but nobody really wants to amend the NOR at this time on this issue. Ironically its the only item in the SER that I think might have saved lives in California accidents of recent years. I have added them to all my PFDs.