> Why does it matter if it is "nuclear-class"? Were there any actual nukes? No. Then who cares?

Because you don’t know it’s not nuclear tipped until it lands. A nuclear-capable missile streaking West out of Russia looks identical to a first strike on early warning radars.

Russia could bring a tactical nuke and use that with no warning. If they want to nuke Ukraine they can do it without "nuclear class" missiles.