I use Claude Opus 4.6 as an enterprise user, and have also noticed a lobotomization. In recent weeks it's been much more self-correcting even within singular responses ("This is the problem - no wait, we already proved it can't be this - but actually ...") I'm wary of 4.7 being a change in this pattern, it's frustrating to have such a substantial change in experience every few months.
Frustrating that the experience changes, and then they retire the better older model because it costs more, although it was better for everyone. The new ones are just geared better towards beating the benchmarks at a cheaper cost!