I think that's because maintainers consider tickets as action items for them personally instead of treating them as feedback documenting known issues(sometimes

I think that's because maintainers consider tickets as action items for them personally instead of treating them as feedback documenting known issues(sometimes with workarounds) for their users. I think DeVault put it very well a while back: a ticket is the place where the community can gather and exchange feedback on a perceived issue with a project (I'm paraphrasing).