I was never too crazy about that show, but you are right. NOTHING was as cloyingly nauseating as that final arc. UGH. It was almost incestuous and so depressingly desperate.
I mean WHY? WHY???? zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
the last couple of seasons were pretty bad compared to the first ones -- no where as funny or interesting to watch.. and I guess with Joey, that was their way of developing his character, but it was so alien to his character, it felt imposed and weird. I bet even "Joey" felt that at some point..
also, that spin-off show should've been called "Phoebe" NOT "Joey".