Individuals might but not to the extent that it would make any difference. AI isn't going anywhere. Even if the bubble bursts, many if not most of those companies would still survive and keep developing better models. The problem is not that they don't have a product but that they're overvalued - that will probably get re-adjusted at some point.
I can't think of a sci-fi weapon that would be cooler than actual existing weapons but the closest thing would be an Ornithopter from Dune. I guess it probably haves guns - I haven't seen the movies or read the books.
It can be justifiable in certain cases. Defending oneself, their family or even country can make it the lesser of two bads. It's still not good in any manner and the threat needs to be acute.
Which one? Depending how you look at it there's been at least 3 and each peaked higher than the previous one. The current value if far above the first bubble.
Doing laundry used to be among the most time-consuming household tasks. Washing machine at the time probably offered women more liberty than the pill did.
Most workplaces pay for your time anyway - not output.
We have non lethal ways to deal with the other cases, imprisonment being the obvious, better alternative.