Well put.
Holcaust-deniers and evolution-deniers sing from the same hymnal on this one.
"...no other explanation...considered." Well, should we teach the theory of demon possession in medical school as an equal to pneumococcal infection in diagnosing pneumonia? Should we teach the geocentric theory as an 'other explanation' to the heliocentric theory?
Your suggestion would open the door to having everyone's pet theories brought into the schools. Personally, I think gravity--which is supported by social and scientific elites-- has no transitional forms, and it is actually invisible pixies that make things fall down. There is no evidence against the Pixie Theory!