Might be true. Victims of this ransomware are forcing them to pay in Bitcoin.
Yeah but the quantities of bitcoin are probably not enough to affect the price in a meaningful way. I would also point out that bitcoin prices have *not* been driven up lately. It's been just the opposite, and anybody would know this with a quick look at a 1 year bitcoin price chart.
There was a thread about this a couple years ago if I'm remembering it correctly. And as I said, whatever ransom these extortionists/criminals are asking, even if the victim had to buy bitcoin on the open market the number of bitcoins isn't enough to drive the price anywhere. I'm sure if they had to pay something like 100,000
BTC that might be true, but nobody is asking that for a ransom.