Which means being inclusive towards a diverse set of different conditions, so those people may equally access content others have access to?

It's part of making a product that works for a diverse group of people. The same way the XBox controller was made smaller for female and children hands. And how including darker skinned people in facial recognition systems is now standard practice.

At many companies accessibility and DEI are rolled into the same office.

https://blog.google/authors/eve-andersson/

One might readily describe the ADA as a DEI initiative, yes.

> DEI would be hiring a blind person, over a more qualified non-blind person.

No, it wouldn't.

DEI might be things like expending resources for outreach to and soliciiting applications from the blind community because there were almost no blind applicants, when blind people could reasonably do the work even if, on average, blind people would be at a disadvantage compared to the sighted given the job responsibilities.

No, that's a flat out lie.

DEI would be concerned with encouraging applicants by and consideration of blind people to a role they can still effectively perform.

It's based on the generally logical idea that if your company with 10k people is staffed with 99% white males in a place where that doesn't reflect the workforce, the most logical conclusion is probably not "only white males can perform this role".