When I look at every bit of raw data, and align the individual votes of users, I see that some people checked all 3 "approval" choices as critical. Maybe, just to be "safe"

Also, in the case of SFI, there is a chance that many checked that as critical in making a choice of what to buy but that doesn't mean critical in terms of performance. For example, if you race with an org that currently requires SFI, you might see that as critical to what you buy.