Empirically yes. Putting aside AI code review for a second, just AI IDE adoption increases rate of new PRs being merged by 40-80%. This is at larger, more sophisticated software teams that are ostensibly at least maintaining code quality.
Based on my experience it's like having an good quality answer to a question, tailored to your codebase with commentary, and provided instantly. Similar to what we wanted from an old google/stack overflow search but never quite achieved.
The more interesting discussion is about long term consequences and if this is a viable path forward.