I would never say instead of. Read whomever you like; read them all. Though, I would suggest that anyone who still takes Copenhagen seriously really needs to digest that sequence.

Eliezer is a smart guy with great insights into how to think about questions. His "position of authority" is that he writes in a way that's clear and conveys meaningful novel insights. If you think that only Ph.D.s have insights worth reading you're missing out. There's nothing "new" or "publishable" in the sequence, but Eliezer collates a lot of good ideas and presents them well.

For what it's worth, I personally feel like I've learned a lot from reading him. I was just trying to share it in the hopes that someone else on HN may find him as insightful as I do, and the quantum physics sequence is one of his better works. It was just a friendly pointer. If you're not interested, disregard.