AI is a force multiplier - it makes bad worse, it _can_ make good better. You need even more engineering disciplines than before to make sure it's the latter and not the former. Even with chaining code quality MCP's and a whole bunch of instructions in AGENTS.md, there's often a need to intervene and course adjust, because AI can either ignore AGENTS.md, or because whatever can pass code quality checks does not always mean the architecture is something that's solid.
That being said, I do agree our job is changing from merely writing code, to more of a managerial title, like you've said. But, there's a new limit - your ability to review the output, and you most definitely should review the output if you care about long-term sustainable, quality software.