I'm actually debating this.

There was visibly something wrong with this crew. Some were using "vous" with each other, which is definitely uncommon between FAs.
I saw one snap at a pax that didn't seem to speak english nor french for having the nerves to put his paper cup on an exit door while struggling to open a bottle of water. This was embarrassing to watch.

Everything was probably by the book, so no grounds for negative feedback per-se... So overall it was an unpleasant crew, but is it worth reporting it? We had this discussion about KL a few weeks ago: I'm not sure it changes anything company-wise, while I can see the possible downside for everyone involved (potential retaliatory actions against the whole crew, being tagged as a "difficult" customer, etc).