I agree to an extent, but that comes down to the fact that complaining on different sites, specifically sites that center around pirating games is not really going to help improve anything.
If one truly has an issue with the game(s) in it's current form, why not provide the developer some feedback so they can improve? Otherwise it largely comes across as a "circle-jerk" of trashing on something (essentially in an echo chamber), because there's nothing better to do.
Also, on a site like this, there is less information at ones disposal than if they were to actively be trying to follow up on the games progress. Why play something if you don't want to understand what's going with it, and why it is the way it is? You can't necessarily say it's fair to trash on it if you don't have all the information at your disposal; because then that's making assumptions to do so.
True, I can understand this viewpoint. They do have a designated gripes thread that you can just chuck your grievances in; although you will likely interact with some people that do disagree with you to an extent.
In all honesty though; the community isn't that bad. There can be the presence of snark, and disagreements will likely occur; but that's likely experienced on every forum out there. So whether one wants to complain here or there just comes down to your decision I guess.
Generally speaking though, some of the devs / writers are somewhat open to feedback, as long as it's not "this sucks, why does it suck?".
Yeah, I can understand that viewpoint.
As was pointed out previously there's likely some issues when it comes to definitively planning things; and determining priorities.
When content was pushed out initially it was likely that it was fully intended to be expanded upon (such as Shar and the other Harpies), but as development moved along they likely would of instead determined it was better to focus on Act 1 and the main quest; so that would then take priority.
Combat encounters and side characters are important to add to the game, but ultimately will be sidelined for main plot progression (or a lot of content) as needed; whether that appeases everyone or not.
There's a fine balance of having content in the game (as in content for specific characters like Shar), and not having the game feel "bare-bones". The unfortunate reality is that's not always going to be pleasing to some if a character they like isn't being expanded upon.
Although, to end off with, I'd say that Shar does actually have a bit of content in the church as well; although not outright sexing as many would hope. There is however a pregnant bust for her in the game files, so eventually that should be put to use (aside from the unfertilized egg(s) laying content*).