I don't know if I agree, but it's not a very extreme take.
Pretend every country with lots of nukes instead had no more than 100 warheads at a time. Would the world be much different? Would the average person be better off in a noticeable way?
Would it make a big difference if we never had hydrogen bombs? Note that we already had them in the early 50s. Everything since then was about increasing the quantity and refining designs, no meaningful size increases.
That certainly is a take.