Probably, you are correct. Their equipment doesn't seem to work so well.
However, even if you devastate another country on the other side of the globe, you stress the entire worldwide economy and infrastructure, and seriously ACTUALLY change the climate for the worse. If we smoked Russia and nothing came back at us (improbable) it would still result in a lot of starvation and collapse.
In reading the responses to your post it is interesting how many people think it is impossible when in fact if we keep going down this road it is likely.
Even a limited nuclear war will change everyone’s life for the worse, much worse. Those that survive that is.
“Their equipment doesn’t seem to work so well.”
Would Putin want to test the resolve of those Russians in charge of “raining” nukes?