Emotional support pets? Oh fuck off.
Of course I understand that pets are incredibly important for some people's emotional wellbeing but they've actually given them a tag now? Like they're essential or something?
Let's be honest, if it's not a guide dog you can do without.
There's a hell of a lot more service dogs than guide dogs that may need to be on planes with their handler.
You have mobility assistance dogs both for those who can semi walk on their own and those in wheelchairs or other mobility devices, hearing assistance dogs, seizure alert dog, allergy alert dog, psychiatric service dog ( which covers ptsd for soldiers, first respondents and civilians, autism dogs, etc) etc . Some of these dogs will be trained properly by facilities that have been doing this for years, some of the dogs will be trained properly by their owners with the help of certified dog trainers, some of these dogs will be trained by idiots who may genuinely need them but refuse to wait for a facility dog and can;t afford or won't pay for the dog to be trained by a professional.
An emotional support animal is less than a service animal but more than a pet. Many still do tasks for their handlers ( pick up objects, open doors, alert to certain stimulants , use an emergency phone if handler falls or becomes unconscious) but their handler does not have a recognized disability and therefor the animal cannot be a service animal. Again you will have well trained and poorly trained individuals among those you encounter.
Do not judge every service or emotional support animal you see based on the bad cases and for godsake don't confront someone about it unless their animal is being unruly and even then be polite ( unless you know the animal is trying to eat your face.)
The asshat who took a poorly trained animal onto that plane just made progress for disabled individuals the world over who need a service or support animal that much harder.