There shouldn’t be a recurring man-made event that causes stress to companion animals.

There should be such an event, it helps dogs and people appreciate ups and downs in life. If you have entirely stress-free life, your stress floor-level becomes too high to handle day-to-day small irritations.

Counterpoint to your opinion - there should be no dogs barking all day 365 days a year and causing stress to people liking some silence.

Or alternatively companion animals that can't handle regular innocent man-made events should be banned.

Like Catholicism, or Royalty, or Govt's?

https://en.wikipedia.org/wiki/Guy_Fawkes