That wasn't the original intent. The original intent was to create new maps or experiences that aren't already in the game. For instance, the first one: hardcore team deathmatch. Not an option in the game. And then the free-to-play maps added for the REDSEC people who hadn't purchased the game to see what the game is. The PVE thing just happened. The bots were added to give people something to do while waiting for other players to join. But it turns out that basically no one plays Portal Custom other than PVE players. Everyone else just suffers through the matchmaking that they claim to hate.
I guess you are right that it is time to adjust this thread to match the demand that exists.