The author is correct that simple and cheap changes such as ramps and door knobs are the logical fixes. And yes, based on personal experience, companies hate disabled people at the first sign that they will be an inconvenience to the company.
However, nature has no such things. If you enjoy nature and the outdoors, then user-specific equipment can provide capabilities not available through cheap alternatives. The prototypes shown are always marketing with some flair to it. Yes, the noise and bulk are terrible, but proof of concept can lead to improvements over time - eg you're looking at a some no-name competitor to the Model T (prototype suit), just imagine what the 2026 civic will look like (suits 75 years from now).