True, that's what the badge says when you hover your mouse over it, but what's counted toward that badge are the games in your collection. At least that's what I gathered given I reached 2000+ items in my collection and my badge is for 1000. Quite frankly, it makes sense since this website's main goal is to track your video game collection.
Regardless, let's wait for the official word, and if I'm wrong then disregard what I said.