It is related to Coinbase, and I do not rule out that it happened intentionally or unintentionally.
I agree, the indicators are showing that most of the retail has not entered yet. Real retail FOMO starts when bitcoin breaks last ATH because that's where the average nocoiner thinks the bull market begins.
They're not that wrong if you look at charts with no bias that we holders have. Every time bitcoin broke the old ATH you could expect the price to double in a matter of months. People who don't care about bitcoin and want to make some money the fastest way possible wait for that signal and when we go past 70k you'll see what happens.
Those who say we're in a FOMO rally don't know what a FOMO rally looks like. It's pretty much that move you saw from 50 to 60k happening every day for 2 weeks.