you said "brick", so I assumed you meant it could brick the Switch. again, you say the glitch may cause save data corruption, but there's no evidence pointing to that. there are plenty of documented cases of people duping items and zero documented cases of people losing their saves because of it. that's what I mean by fearmongering. there's no need to appeal to fear to convince people not to dupe. the fact that duping and then trading the duped items online is unfair to other users should be enough to convince people not to dupe.
again, there's no evidence whatsoever that this glitch is dangerous at all.