Yes, but Hydrogen bombs are real as used in Japan.
The bombs used in Japan near the end of WW2, were not hydrogen bombs. They were said to be atomic bombs. Hydrogen bombs weren't even acclaimed to have been developed at that time.
But what the bombs used in Japan really were, was TNT or some form of plastic explosives. The reasons why they couldn't have been nukes, is listed in the article in the OP.
