Biologists conventionally think that it is a crazy idea. First they argued that micro organisms cannot last through the passage through UV, X rays, gamma rays. Now people have shown in laboratory experiments that bacteria learn to survive. So that argument doesn't work. People are still not receptive. It is like the heliocentric theory of Copernicus. Biologists are going through the same phase.
His view on the issue of life originating in space. - Jayant Narlikar's Cosmology