And the fact, that the US had a huge headstart doesn’t come to your mind? That, by the time the soviets had their first one the US had already understood the system and could develop it further faster? The soviets only gained the bomb through espionage, so even after they had it, they needed more time to reach a level of capability, comparable to the US before they could start ramping up their production.
The graph above “United States and Soviet Union/Russia nuclear weapon stockpiles”, doesn’t that look like a reaction of the USSR?
https://en.m.wikipedia.org/wiki/Nuclear_arms_race
And the fact, that the US had a huge headstart doesn’t come to your mind? That, by the time the soviets had their first one the US had already understood the system and could develop it further faster? The soviets only gained the bomb through espionage, so even after they had it, they needed more time to reach a level of capability, comparable to the US before they could start ramping up their production.
That explains why the USSR couldn’t react faster. It doesn’t explain why the US built so many bombs.