Peter, that's a terrible suggestion! Specifically the "and then eaten" part, which may cause the participants to become infected with this idiocy. I think "and then launched into the sun" would be safer and possibly more effective.
On a more serious note... One could simply lie about the software version, but omitting it entirely is indeed noncompliant. Of course, lying will thwart the efforts some implementations have gone to over the years to interoperate with even badly broken software. I suppose that's a legitimate tradeoff for a server operator to make.
In reality, this is not a vulnerability. The bad people are going to try all the known attacks anyway. About the only thing this does is prevent security scanning software from reporting the apparent presence of a vulnerable version.
-- Jeff