Kotor was fine because you didn't have things like jumping and climbing and lots of traps to maneuver through. Most traps you spotted and disabled right away so you weren't maneuvering through mine fields and stupid characters were easily triggering them.
I think one of the worst games control-wise IS NWN2, to be sure. They butchered the controls. Every time I try to play that game again I am constantly trying to adjust the control and camera settings. It really is a nightmare.
So yes. BG3 could be a LOT worse. No doubt. Also, it's gotten WAY better since EA started. I think Shadowheart jumped into lava on me in Patch 6 or 7. Since then, the worst pathing and such has been leaving companions behind and not realizing it.