- protects the wrong entities (corporations instead of individuals who did the real work) - IP should be collectively owned by the people who created it and selling it should be illegal,
- is too long, yes
- DMCA can be used to harass without actually owning the IP and there are no penalties
- the fair use exception can be used to allow clear cases of plagiarism where you mechanically transform an original work with barely any human input in such a way that it's hard or impossible to prove it was based on the original.
As for _patents_, they should simply require proof of work - basically they should only be for recovering research costs (with profit), not holding everyone hostage. They should also be subject to experts in the field verifying they are not trivial and how much work they would take to replicate.
And obviously China is a global parasite. We should apply to them the same standards they apply to us - none.
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More generally incentives matter. If trying something has (near) 0 cost but high reward, abusive actors will keep trying despite most of their attempts failing. Anybody who understands that incentives shape the world will immediately identify this pattern (any gamedevs here?). There must be punishments for provably bogus attempts to use IP - both copyright and patents.