So do you really blame people for expecting to get a FINISHED game some time down the line?
I mean... In the last 10 years... When has there ever been a "Finished" AAA title?
Meanwhile, people had been (And still continue to) ranting and raving about how good the game was on release and how good it still is... Despite it being so very lacking outside of Act 1.
It'd be pretty disingenuous for people to be rating it GOTY and giving it award after award... On the presumption that it would eventually be finished and thus be deserving of such.
Ergo, it would seem that expecting the game to get finished is a problem for only a minority of people. With many others being satisfied with its unfinished state (Or at least, not bothered by it)
There is a difference between "lets add full voiceover" (Disco Elysium) and "lets add ending cinematics and maybe fix the broken last third of the game (no, we don't).
As for the awards, the reason for this is hype thanks to the ip and Larians bear sex marketing. You can see that by the several nonsensical awards BG3 got where people just voted BG3, no matter what the award was for like best community engagement after Larian went complete radio silent and not even informing people of delays until the day if release, and then only posting it on a privat developers X account.