That is, there are (were) only 129 or so days when today's price was lower than in those days. Obviously, that refers to the period of the recent spike to nearly 14k as well as the period in November through December of 2017. But this is a ridiculous approach since somewhere near the end of 2017 it could be said that Bitcoin had been profitable throughout its entire lifetime (up to that date)
Nothing ridiculous more like childish approach
When anything being crypto or stocks reach an all-time high it's impossible for anybody that has bought and hodl to be at a loss.
The main problem would be the number of people involved since OP is counting the days from the first block, but the first-ever trade happened in October, that's a full 10 months or 300 days or 8% of the time when NOBODY bought any coins for fiat.
And how many bought in the first days, and how many in those 100 bad days?
Looking at the volume, we could draw another hasty conclusion, the majority of buyers are unlucky