It’s cool to us.
I can absolutely confirm that neither cats nor dogs particularly enjoy hearing multiple frequencies in that range, as I use ultrasonic noisemakers to train dogs and cats. Both species have had individuals that reacted as though I had just beaten them, and all the individuals reacted in such a way that it was clear that they would do just about anything to never hear those noises again.
That being said, I wonder if they could hear that frequency all the time and were freaked out that a human was shouting in plant language.
Do they show similar signs of distress around plants in general? Are they reluctant to enter forests? Do they randomly destroy plants?
Lol I thought it would be clear until that last question, which is something both cats and dogs are known to do on occasion.