Because I recall numerous times in Baldur's Gate 2 where your party would be approached while your character hid and any time you so much as transitioned an area you would lose hiding.
Which was reasonable enough, but there are many situations in BG and BG2 (in fact, possibly even IWD) where you can stealth up to something that is scripted to talk to you, yet it won't recognise a character that is stealthed. Alternatively, my main character (a rogue) can stand at the back while stealthed and Viconia can say whatever, then I can backstab the idiot (as I should be permitted to do). This is entirely different than NWN2, which takes the most offensive and insipid solution (teleporting you and making sure everyone can see EXACTLY where you are). What you've said sounds to me like you have characters that are not hiding in shadows, that are seen and then spoken to, which is fine. You don't actually lose your stealth in this situation (though I do believe the game keeps making checks, it's been a while).
Again, BG2 did it right. The game doesn't have the engine to permit you things that you should be logically permitted to do anyway like jump through a window. So it gives a fair and reasonable abstraction given its limitations. NWN2 does not. Hence the objection.
hmmm.
Minsc talking about being a Bhaalspawn.
Vs. the potential having my mage/rogue PC teleported right up to talk face to face with the likes of Demogorgon.
I'll weigh these up on the scales of "What potentially aggravates me more" and get back to you.