It’s not for everyone. In the money tests the chips were implanted and scanned brainwaves until enough were gathered to decipher and interpret their meaning. (Not a scientist and my laypersons understanding). The chip could then be programmed to react to the brainwaves. If you were a quadriplegic and offered the ability to use a computer or control other devices this may give you some autonomy. Fast forward, a second chip is implanted beyond the spinal cord break and you gain movement in your arms and legs. The line would be long for those begging for the chip.
You don’t read much of what Musk writes, do you?
https://www.theverge.com/2019/7/16/20697123/elon-musk-neuralink-brain-reading-thread-robot
“It’s not going to be suddenly Neuralink will have this neural lace and start taking over people’s brains,” Musk said. “Ultimately” he wants “to achieve a symbiosis with artificial intelligence.” And that even in a “benign scenario,” humans would be “left behind.” Hence, he wants to create technology that allows a “merging with AI.” He later added “we are a brain in a vat, and that vat is our skull,” and so the goal is to read neural spikes from that brain.