Earlier quoted context omitted.
Perspective. We didn't know it at the time, but looking back it's pretty obvious. Once the issue of the forks and the SegWit activation was cleared, the price rose relatively fast. And I'm talking in relative terms; it was undervalued relative to what happened next.
> Once the issue of the forks and the SegWit activation was cleared, the price rose relatively fast. Yes, we know the ship is unsafe because otherwise the front wouldn't have fallen off! We know the price rose. This article is suggesting that the price rose not because it was undervalued, but because it was manipulated upwards by people pumping it up with fake numbers.
>From March 1, 2017 to March 31, 2018, the actual Bitcoin price rises from around $1190 to $7000 for a 488% return. In contrast, the price series without the 87 Tether-related hours ends at around $4100, a 245% rise
>These 87 events account for less than 1% of our time series (over the period from the beginning of March 2017 to the end of March 2018), yet are associated with 50% of Bitcoin’s compounded return
They don't claim that all the price increase is correlated with Tether, but that it was certainly a big factor.