I think no one is disagreeing with you because it's true. Most of the time, people who start their projects post in the announcements and when you start anything that is cryptocurrency and different from Bitcoin, it would be considered already an altcoin. It's not that surprising if you check the Recent Unread Topics at the top of the site. A majority from my list are from Altcoins:

• Bounties (Altcoins)
• Announcements (Altcoins)
• Mining (Altcoins)
• Service Announcements (Altcoins)
• Altcoin Discussion