It must have been difficult for a man like Frank Hamilton to observe that Burl Ives' career thrived over the years while that of the Weavers, Seeger et al., was virtually halted by the machinations of the HUAC. But I don't think it matters anymore, as regards appreciation of their value to society, not to people like those who populate Mudcat anyway. The songs of the Weavers and their ilk are there on record for all to hear and they will never be forgotten, and neither will Burl Ives.
I, for one, have been listening for some 60 years, on and off..