I would let the balloon thing slide. Honestly. A baby is now dead. I don’t think this is the time to be making an environmental point however valid
That’s it though. Because these balloon releases are often used as displays of grief no one ever says anything. Which i understand. If you do say anything, the trump card “they’re grieving and should be able to do anything that helps”.
So we’re back to bad behaviour being excused.
It’s never the right time. So it will continue.