If I can’t ride my bike up big hills can i get an e-bike for the same price?

If you have a disability you can get a mobility scooter

If I’m very tall can i get an airplane seat upgrade for free?

Neither the very tall (nor the obese for that matter) are part of a protected class, and their relative sizes are not considered disabilities. However those physical conditions can lead to disabilities (heart and joint issues for example) which then lead to reasonable accommodation.

Your straw men are cute, but this isn’t Kansas, we don’t need them here