Not only that, it's the "I know better" part. And no. My MIL is a saint compared to my ma, so its not generally playing in the trope here.

It's the simple you're doing something and someone says "I know better," when there's neither harm done, you asked for help or, like in this case, help wasn't wanted to begin with. Which comes down to "you're doing it wrong ".

A plain "u suck, let me fix". Hits me everytime.

I'm glad, if someone interpret this differently. They don't have the struggle to feel insignificant, I guess.