Well I don't know about you who have been there for a longer time, but if audio portal is now dead, then I can't possibly imagine what it was like back then in the 'golden days'. There's lots of contests going on (AIM, NGAUC and NGADM (which we wont have this year unfortunately) to name a few), And lots of people are still producing and engaging in discussion on the forum.
I agree that it is a pity that many talented producers have left, but there's also many new, and old users to take their place and continue what they left behind.
Actually I think that there is just as many talented composers around, they just don't get the same status / way of recognition as say, Dimrain and Paragon got.
Might be bit rich coming from someone who has been an user for less than a year, but that is my point of view.