To me, this is a negative and mostly irresponsible use of AI.
OP dumped a huge PR (edit: not actually huge) on the Mumble maintainers,[0] which didn't match project conventions. He left a bunch of unresolved conversations with Claude that are hard to follow because it looks like an insane person having a conversation with themselves.
Then, the Mumble maintainers gave him pretty polite, patient feedback, and he just ignored it. No follow up for going on three months. Granted, the maintainers left the PR in the queue for four months, so it's not like OP is the slowest link, but I definitely wouldn't point to this as a win when there's basically no traction on the PR or any indication this will be merged.
[0] https://github.com/mumble-voip/mumble/pull/7180
Edit: radlad is correct that the PR is not "huge" at ~300 LOC. I was reading on my phone and didn't check the PR size and mistakenly trusted OP's assessment of "huge."