You don't build a weapon to counter a hypersonic missile, you "poison" the technology/information used to be build the hypersonic missile.
Perhaps, but what do you do after it's already been built?
Arguably this line of thinking is what created the present climate. Stuxnet destroyed Iran's nuclear program, but after that it was open season to do anything that didn't directly involve civilian casualties.
There really is no way to play things "militarily" to prevent military Escalation. For what's it worth, I think the US played it as best as they could given the circumstances with an even dose of military preponderance and economic bridge-building. Parts of this are chickens coming home to roost, after the Berlin Wall and Soviet Union collapsed I feel like there should've been a de-escalation of global military projection. Can you imagine if the military budget was cut in half and diverted to other programs back in 93...we probably would've made it to Mars like originally forecasted.
Now that we're reverting back to cold war predispositions I feel like they have to keep the same funding or more in place. The truly unpredictable thing that arose to me out of this is how trash Russia's military is. Decades of neglect and corruption got it to where it's at. My fear is all they have left are bombs. Which historically aren't the most accurate, but they circumvent with sheer explosive yield.