I got down leveled when I moved to big tech. Spent two years completely remaking the product I was tasked to work on, while the two other engineers on my team, both a level above me, cheered me on and didn’t do much. I turned our product from a total waste about to be cancelled into a promising tech with some momentum, but I spent all my time coding instead of writing about coding, and I likely won’t get promoted aga…
As a FAANG SWE, what I am reading is "I spent two years cranking out code without doing any design work. My manager and TL never suggested I write a design doc, or didn't give me opportunities to do so."
At least at my employer - where, yes, you typically need to do design work to get promoted - that shouldn't happen. It's a failure of management if it did.