So if I happen to suffer from DVT, it's acceptable for me to demand to use the seatback in front of me to keep my legs elevated?

If I have pet allergies, I can demand that all service animals (including the fake family pet comfort animals) be banished to the coat closet?

Here's a thought: If you have a severe allergy, don't take a job where you are reasonably expected to come into regular contact with your particular allergen.

A major problem with today's society = my problem will be forced to become your problem and I demand special accommodations for all of my problems (real, perceived or exaggerated) at your expense (aka Special Snowflake Syndrome or Millennial Syndrome).