Experts have noted that the accuracy of Oreshnik, as demonstrated in the footage from the Dnipro strike, is sufficient for delivering a nuclear payload but not for a conventional one.[5] According to William Alberque of the Henry L. Stimson Center, “If Russia is working on a MIRV with a conventional CEP, we’ve never seen it.”[5] Other experts have noted that the accuracy concerns from Oreshnik’s warheads could be mitigated by using submunitions.[5]
Russian nuclear policy expert Maksim Starchak suggested that the primary purpose of the missile’s use was not military damage but psychological pressure. He believes the strike was intended to frighten European residents into pressuring their governments to comply with Russia’s demands.[33] According to Meduza, the Kremlin’s intent might have been to instill fear of conflict escalation with Russia in the incoming U.S. administration, thereby influencing its policies.[34]
Based on that, it doesn’t even sound like a terribly useful way to hit a (point) target with a conventional warhead, unless Russia revises the missile to be more accurate.
EDIT: Regarding the numbers in question for the particular MRBM mentioned:
Russia currently has no more than three or four Oreshnik missiles in its arsenal, but plans to launch serial production in 2026, aiming to manufacture five or more missiles per year, Oleh Luhovskyi, First Deputy Head of the Foreign Intelligence Service of Ukraine, said in his interview with Ukrinform.
In general, it’s good to have counters, but I doubt that it’s actually all that critical to lack detection capability for MRBMs.
MRBMs are going to not be incredibly numerous.
If used with a nuclear warhead, there are already nuclear deterrents in place, and they don’t rely on launch-on-warning.
If used with a conventional warhead, MRBMs might be a reliable, hard-to-intercept way of delivering a payload, but not a very cost-effective one.
checks WP
https://en.wikipedia.org/wiki/Oreshnik_(missile)
Based on that, it doesn’t even sound like a terribly useful way to hit a (point) target with a conventional warhead, unless Russia revises the missile to be more accurate.
EDIT: Regarding the numbers in question for the particular MRBM mentioned:
https://www.msn.com/en-us/news/world/intelligence-reveals-russia-s-oreshnik-missile-stockpile/ar-AA1UTvo6