It's a feat that could be leveraged, but the likelihood and work to do so would outweigh actually pulling it off. If this attack occurred against, for example,

It's a feat that could be leveraged, but the likelihood and work to do so would outweigh actually pulling it off. If this attack occurred against, for example, the CN government, they may step in and force miners to invalidate. This scale is world-wide, there's no loss of public image and the amount of BTC is very small in the scheme of things.