"So what are you gonna do when nobody tells you?"

I would ask if it is original or not.

Are you aware that you are apologetic towards criminal behavior? The law must pursue this kind of fraudulent activity and advanced AI will provide a very potent and powerful tool for this. I am absolutely sure there will be AI-powered detectors, which will be able to tell if an item is original or not.

Yes, there is. Even if you alter the definition, the same time it splits into two concepts. If you change the meaning of "handcrafted" into something like "created randomly either by machines or humans", you just create an other concept. So, now you have a category of "handcrafted items" which has two subcategories: machine made and man made. The latter obviously can't be produced by machines.

It doesn't matter how many times you repeat this action, because every time a new definition will be born. It's not possible to erase a concept from existence, therefor there will always be stuffs which, by definition, can't be made by machines.

If somebody wants to buy a specific human made item, he or she wouldn't be satisfied by a perfect machine made replica, right? For example, if I want an original Salvador Dali painting on my wall, I won't buy a replica, however perfect it is, and however it seems to be a mere semantic question.

It doesn't matter, because the definition is universal, not depending on dictionaries.

Some people do care. Rolex watches are hand-assembled. Yes, you can produce an infinite amount of cheap, factory made fake Rolex watches, but that is forgery (illegal), and wealthy people won't touch it. If you are poor, and want to seem to be a wealthy person, you may go for the replica. But if you are really wealthy, you definitely go for the original, handcrafted watches.

"Then they CAN do the job, they’re just not allowed to" Yeah, just like machines are able to make fake banknotes, just not allowed. And that is good.

Nope. Definition of 'handcrafted' by Cambridge Dictionary: made using the hands rather than a machine. Machines can't do handcrafted items, just randomized factory items.

Machines can't make handcrafted items, otherwise they wouldn't be considered as handcrafted.

Human-only jobs, like staff in a human-only restaurant. Making handcrafted items.

Charlie Stross' Accelerando, written in the early 2000's. The first part of the book is staged in the late 2020's and it's very similar to our real world.

I think there will be hundreds of millions who will refuse the brave new world. I mean it's easier to accept cars and electricity than superhuman AI and a chip in your brain. Most likely there will be parallel societies. One super advanced and globalized society for those, who want to thrive and prosper, and a lot of backward looking societies for those who don't like the idea of rapidly advancing technology: neoluddites, ultra conservatives, qanon-guys, and other esoteric folks. Just think about the antivaxxer movement, how big it is. And because they have human rights, you can't force them to accept the technology. You guys, in this subreddit, always underestimate the human stupidity.

Do you think Amish people and other very conservative groups will accept automation and give up working?

Not gonna happen. There always will be AI-free communities, therefore full automation is impossible and there will be jobs for humans.

There are jobs where a robot never can replace a human per definitionem.

For example, a handcrafted item can't be made by a robot because it would not be handcrafted, even if it 100% identical to real handcrafted items.