As the scope for complex task automation becomes broader, almost all problems become trivial. Satisfying hard work, with challenging and problem-solving elements, becomes a rare commodity. People work to identify non-trivial problems (a tedious process), which are traded for extortionate prices. A lengthy list of problems you've solved becomes a status symbol, not because of your problem-solving skills, but because you can afford to buy them.
Another angle: Is it plausible that almost all problems become trivial, or will increased knowledge lead to finding more challenging problems?
The latter seems at least plausible, considering that the universe is much bigger than our brains, and this will presumably continue to be true.
Look at how much weirder the astronomical side of physics has gotten.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.