I guess OP is just frustrated at the tall claims of the advertisement he saw. But he is probably mistaking the target audience and customer group of the ad.
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I have not used this lens, but it seems like this is a case where there is no down side to adding the soft focus in post processing. In the film days this lens created a unique look. Now, its just easier and probably better to do add the effect later.
And yes, others could have a problem with it when you hand over the camera, because they want to take a picture of you.....