I agree with most of what you wrote.
I rather not quibble on the Bernie/FDR comparison. I've read a few biographies on FDR and the two men have some similarities but I don't agree with assertion that Bernie is an FDR democrat. So I'm going to just go by memory and you can correct me if I'm wrong since it is your position and not mine.
But I thought FDR didn't support a complete universal health care it was actually Truman that proposed a truly universal health care. FDR was focused only on the needy where Truman's plan was for all.
On a personal level these two men couldn't be further apart. FDR was born into wealth and married into wealth. He attended the best private schools and the elite colleges. He was cousin to a former USA president and had connections Bernie never had.