It's been three years since Amazon discovered microchips in servers’ motherboards which should not exist there and report that to U.S. authorities. They confirm that microchips
"allowed the attackers to create a stealth doorway into any network that included the altered machines". This is so far affect some 30 big US companies, and because of that (and some other things) Trump administration is start trade war with China and shift some of sensitive technology production in some other countries. Although I have to admit that it is not clear to me how China planning to implement this plan on a long term, it was only a matter of time when someone discover extra microchip on the motherboards.
From the technical point of view regarding
BTC and cryptocurrency in general I can not say can this have some effect, it's been three years since it is discovered and this is enough time to take some countermeasures.
More info :
The Big Hack: How China Used a Tiny Chip to Infiltrate U.S. Companies