+1 for stating that the technologies themselves are not the grifts.
LLMs are fantastic tools. Quantum Computing will have meaningful uses.
The grift is the marketing and the dumb C-Suites that fall for it.
To answer your real question though, I need an AI that will actually convert a basket of dirty laundry into a stack of neatly folded clean clothes. That shit will be revolutionary.

The problem is not that this technologies are or aren’t a grift, the problem is that they are used to grift (and that the 4th power that is supposed to protect us against this isn’t doing its job).
In that sense : every next technology will be a grift. Look at spaceX, he sold refueling booster as the next step in human space exploration evolution and finally its just another company used to mine our data. Grift
save