I recall hearing how Russia had dozens of them, and the ROI of a 40 million dollar missile taking out a 400 million ship was great. And then Ukraine got worse and nothing happened, with zero of them ever found or used.
And North Korea thinks it can even attempt that. I guess we need a “new” geopolitical boogieman to pander for increasing military budgets, since Russia is losing and China does it usual “we will take over Taiwan, unlike last year!” every year.