Such films have had just one screening. Diagonal Simphony by Viking Eggeling was screened for the first time in 1925 and then more than twenty years went by before anyone could see it again. The same thing happened to Tusalava by Len Lye : it was screened for the first time in 1929 followed by thirty years of silence.
I don’t think it’s any easier today to watch film art as it was in 20’s, unless we illegally download these films by using emule!
I believe in film art. Today journalism must be as energetic as it was in 20’s, if we want continue to watch film art. Hence the importance of film clubs and film blogs, too.