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Currently all the layers in patent application process is incentivized to ignore quality.Not just "incentivized to ignore quality", they aren't duty-bound to consider quality at all. The PTO evaluates applications for novelty, not quality.
The three main relevant parts of the US Code are:
35 USC Sec. 101: is it patentable? (i.e., it must be a process, machine, process, or manufactured good. It can't be something like an idea or song)
35 USC Sec. 102: is it novel? (i.e., no one single prior existing item teaches all the limitations of the patent claims)
35 USC Sec. 103: is it non-obvious? (i.e., you can't combine a couple of different patents to arrive at your patent)
There's a few other important sections (like 112 that ensures you're giving enough detail), but none of them look at "quality". In other words, you can patent a worthless invention as long as it passes those wickets.
Edit: Somewhat surprisingly to some, they don't necessarily evaluate infringement either. So you could, in theory, have a novel patent that you can't use to make something because it infringes on an existing patent.