Nope. Because it's pretty clear Scooter's been in the closet way too long. Just subtle and not so subtle things about Scooter from the original Muppet show to later on. Heck, I mean Scooter cage dancing in that outfit was pretty much the writers saying "yep".
Three words: Sylvester Stallone Episode

(just look at how Scooter is pretty much tripping over himself at Stallone's physique:
6:35 mark:
http://www.youtube.com/watch?v=a0puzAX_J74 )
Scooter did get really excited when Elton John came on
Heh, pretty much anytime there was a big broadway star or beefcake, Scooter was practically swooning.
I don't understand why people would have a problem if they made him clearly gay. We have Zoot who is revealed to be Jewish, Clifford who is portrayed as black, Statler and Waldorf portrayed as elderly white men, tis good to have variety.
Scooters demeanor is tender, helpful...whereas Link, Pepe, Animal and many of the male characters come off a tad chuvenistic toward females.