My Grandmother used to say “sugar” all the time when she wasn’t referring to anything sweet. I remember years ago my dad having a conversation with me about how he’d rather I just say what I was really feeling instead of substituting another word for it. He went on to stress that ideally he’d rather I didn’t even think like that.
I have this same battle with some of my boy scouts. Just like Denae’s use of “piffle” they have created quite a few cuss word substitutes that I find as offensive as the words they are replacing, especially when they preserve the same starting sound and inflection that Granny had with her “sugar”.
Just finding substitute words doesn’t fix the problem. It just mildly camouflages it.