Big missing piece - what was the impact of the degraded quality?

Was it 1% worse / unnoticeable? Did it become useless? The engineering is interesting but I'd like to see it tied to actual impact

Significant, check any Claude related thread here over the last month or the Claude Code subreddit. Anecdotally, the degradation has been so bad that I had to downgrade to a month old version - which has helped a lot. I think part of the problem is there as well (Claude Code).