This says it's better Stephen Hawking is dead because now he can walk in some theoretical afterlife (that he did not believe in).
If that never dawned on you, it's because ableism is foundational in our culture. Now you can see it. Unlearn it.
The ideal of a "healthy body" is deadly.
Disability should not have curtailed that. And disability should not have made that a remarkable, inspiring thing.
The fact that people are celebrating his "freedom" from his disabilities says that death is better than needing assistive devices.
This is what it means.
It isolates disabled people. It degrades us. It limits us. And it tells us that unless we can be exceptional geniuses, we should just die.
And even if we are exceptional, we'll be happier when we're dead anyway.