That is missing the point. The underlying biological mechanism is rock solid. Engineering is needed to make the procedure less invasive, and to do it well enough to produce results.

It won't help the underlying AD pathology, but it's a workaround to mitigate some of the harm. It should in principle work better if done early before large deposits form in the brain.

> Capitalism is going to try and optimize for profit

This in no way allows spreading falsities and FUD about competitive prospects. It is not excusable.

If the two points you've posted are true, point me to some replicated studies that say so.