Cochlear implants don't usually involve shoving things into the brain.

You're just getting audible signals from the cochlear implants. It does nothing more than override natural function of the ear.

Neuralink on the other hand, allows two-way signals. Signals can be sent to the brain and from the brain. If you scramble a brain enough, can we even say the result is human anymore? At what point is it just lobotomy to produce a more "happy" and "productive" person? Depressed people may want a Neuralink to turn off their emotions instead of dealing with the cause of those negative emotions. Sounds like a lobotomy to me, personally.

Furthermore, there are significant ramifications to the introduction of augmentations. At a certain point we may create augmentations that improve your ability to do work. In a competitive work environment, it would mean employers would choose augmented individuals over non-augmented individuals. People may even start lopping off their arms because it allows them to perform more hazardous tasks with only a financial risk when they must replace a damaged robotic limb.

You do not want to live in a world where you have to undergo medical procedures to acquire certain positions, do you? Neuralink is no different than the "vaccines" in that capacity. It's a foot in the door towards medical tyranny and the start of Chinese sweat shops turning into Borg cubes to stay economically competitive.