I’m gonna be blunt: most of their ideas will probably be stuff they read off an LLM anyway and just reworded.

All our good ideas come from senior level people drawing from a rich history of experience and bold vision.

Even if juniors most of their ideas are exactly like you said, they would have more energy and almost no trauma from past experiences to experiment more.

While experience is important, it also creates blind spots as it's quite hard to have every experience about a particular topic unless you have been working on that tool/stack alone for decades.