Ethical issues aside (and they are considerable)
This technology does not exist.
There is no reason to believe it could possibly work.
There is no path to making it work.
This is another "we tell you a sci-fi story and you give us all the money" VC scam
In addition to money, the "innovators" no doubt hope to gain access to a captive audience of "volunteers" to test the limits of neural manipulation. They won't get their (horrific) "become a new person in minutes" concept working, but they'll profit from pretending to try.
And even if it technically “worked,” there is no way anyone subjected to this would be able to maintain sanity. You simply cannot implant false memories in a person’s mind without their brains rebelling against that.