In my opinion, 25 years are not a long time for science. As an example, you could see the case of Ignace Sommelweis, a surgeon who discovered in 1845 that desinfecting the hands before doing a childbirth largely reduce the death of mothers (from 27 % to 0,23%). Even if this man saved so many lifes, nobody trusts him and he died 20 years later without recognition of his discoveries including desinfection and germs transportation.
I found this example particularly interesting because even if you save with evidence so many lifes, acceptation process can last for a very long period.
Einstein said also, people have to hit the reality before they accept.