I fail to see how any state would think it's a good idea to spend bitcoin on spamming the network instead of holding bitcoin(if they ever choose to acquire it in the first place). also whatevee negative effects caused, if this actually happened, would literally only be high fee rates, which would make plebs unable to move bitcoin in the short term, in the long term this will lead to more investment/research in L2 and L3 as well as more bitcoin mining hash rate and better mining gear. so overall an "attack" of this nature would just be a W for the network while the state would have printed loads of money, inflating their own currencies supply and negatively affecting their own citizens.