Why not? They've both made tremendous contributions toward scientific understanding of how the universe works.
But so did a lot of others. These two are more known for their popular science, than for their actual scientific advancements. I am not saying say they wouldn't deserve it, but a lot of others also would, some of them more in my opinion.
That said, it is pretty pointless to argue about element naming, as it the discoverer can usually name it any name he wants, no matter how silly.