There are a few reasons why the situation as described above is set as it is now.
1. The staff checks most (if not all) games that are being posted here. We do not want our younger visitors who come here being disturbed because someone posted a game with some 16+ or 18+ content in it. This can be horror based or even sex based. We have children visiting here that go down as young as 8 years (perhaps even younger).
2. This forum is made to share great free games you have played and you want to tell others about it. Its not the kind of forum to just chat about any popular game, also because this might overshadow Nifflas' game or even create a popular vs indie gamewar. Sure, I could make a topic about Call of Duty 4 (Though this would break the 16+ age limit) and tell how good I am in this game and how much I love it, but this is so much different from what games are generally being posted here. Besides, there are a lot of great gamesites to feature these games. If you really want to start a conversation about one of these non-free games, then use IRC.
3. The staff cannot change the way Nifflas brings his games. We're merely happy to be part of it all, just like you. Besides, we do support Nifflas and the way he wants to make a living out of his gamedevelopment.
4. True, its possible with Nifflas' games to come to a point that someone seeks help and doesn't have the full version because it costs money. Nifflas' games do not cost much, and I think I'm safe to say that when you speak of a Nifflas game, whether its free or not, you know before you play it, that you'll have a great time. Its almost an insurance that you can safely buy his game because you know on beforehand that it will be a great game anyway.
5. Don't forget, we created this forum as part of the off-topic chatter that we used to have but got out of control. In the worst case, where it seems that people do not want to have this very forum in the way it is now, is that we remove it all together.
I guess it all comes down to this: The vision of this forum is, share things for free, with the exception that Nifflas needs a little bit of cash to support himself.