I disagree, re: Tiny Tim. I do not claim he was a great ukulele player, but I certainly don't think he hurt the popularity of the instrument and he most definitely helped preserve The Early American Popular Music Songbook.
Tiny Tim was a walking encyclopedia of American pop music from the dawn of recording in the late 19th century through the era just prior to WW2.
Vaudeville, early hot jazz, torch songs, vocal jazz standards, the crooners, etc. Tim knew most everything about that stuff.
I came on here to say this and wasn't surprised to see him talked down some, and that's fine. It's understandable; just a different viewpoint.
But I think we should be happy that he chose to use the ukulele as the vehicle for his awkward, weird warbling.
He was a larger-than-life character. Unique in a way that is pretty much lost today.