hmmmm, I own Sesame Street...Unpaved the book and it says:
"The character was abandoned because he was thought by some to be a negative cultural steryotype and because the schoolroom in which he spent most of his time was considered too rowdy and to be a bad example. The kids in the class...were prone to smart-aleck remarks, throwing papers, and general disruptive behaviour. nevertheless, roosevelt remains an old Sesame favorite, and goes down in history as one of the coolest Muppet poets."
And to end with a Roosevelt Franklin poem:
"Same Sound Brown was a rhymin' man
He would rhyme words faster than I bet you can
See if you said "moose,"
brown would say "juice."
If you say "Moose juice,:
Brown would say "Loose Goose."
If you said "Juicy Loose Goose,"
Brown would say "Moosey Gose Juice."
...ahhhh how beautiful