I submit the following.
1. The 3 year old's tantrum is not always bad parenting,
a. Bravo to him for not suppressing his emotions - albeit rather embarrassing to the parent.
2. The adult tantrum is just part of life.
a. it’s whether you push it down or let it out that matters.
3. Every once in a great while the adult form of the 3 year old’s tantrum is acceptable.
Today was my once in a great while.