No. No he's not doing any of those things. His money, sure. But engineers and scientists are doing those things, and often forced to rush results under pressure from him.
And even then, no, no he hasn't done any of those things.
Neuralink is decades behind what a lot of other countries have managed. So far it's had control of a cursor in a paraplegic. Big whoop. Braingate was doing that 20 years ago. A Swiss team has been working on electrically assisted bypass of spinal column injuries since 2014. In 2014, restoring movement to an arm, in the early 20's, three chronic paraplegics were able to perform assisted walking, and 2023 saw their first wireless brain-spine digital bridge translating intention to movement in Gert-Jan Oskam.
Making the blind see? He hasn't even started trials. We've had implanted electrodes restoring ability to see light and even see basic patterns since the seventies. Argus II prosthetic retina has had FDA approval for implantation since 2014, and brain implants have been placed in a blind woman by a US/Spanish team 5 years ago, letting her see outlines and basic patterns of objects for the first time in 16 years.
The miniturisation and high-bandwidth processing is cool and all.
But Elon Musk didn't invent brain interfaces, neural implants or artificial vision - and his tech hasn't made a single person walk or see when they couldn't before.