An interesting point and not untrue, but it's only important if we're trying to get at "human nature" in itself, which to me seems kind of silly as we're social animals by nature. In practice, there's nothing wrong with testing different levels of awareness, and if an experiment is part of popular culture then it's part of us too.

It should be noted that the SPE's methodology was totally fucked in the first place, and before reproducing it we'd need to actually perform it "right" at least once (which can't be done now that ethics* boards are a thing).