I think there is much more than 1M bitcoins lost.
and when you google for these lost bitcoins stories most are really dated numbers in terms of value.
You literally have to multiply the reported value 15 fold making it even more "head shaking worthy." (for want of a better term)
So for example
this familiar story I'm sure most of the legendaries/heroes in here have heard about the
7500 bitcoins lost valued at over a reported $5 million then that are now worth around $70 million.
And this is just one story of many.
It's mind blowing when you think about it.