This is fairly interesting, I was actually going to make a thread about it myself.
It is obvious that newer games were dumbed down with fewer skills and such. Spears, crossbows and throwing weapons that were in Morrowind were not included in OB. Many skills in Daggerfall not available in Morrowind etc. Players complain because they were used to these things. While some concerns are, IMO, valid, others were out of pure nostalgia.
I tried to play Daggerfall to have a better understanding of the TES series and to see what major changes were done in Morrowind, but I couldn't handle the controls so I decided to just watch videos of it and read articles. I could see why Daggerfall fans were disappointed in Morrowind. Random quests, many factions, holidays, events, reputations, etc. All gone.
Some complaints were justified in my opinion, like the interesting quest choices, the events (summoning days for daedric princes for example) and the combat system. While others, were removed for the better good. The landmass is much smaller, sure, but we have a much more detailed and interesting world worth exploring. Many skills removed because they were useless or poorly implemented.
It seems that whatever move Bethesda developers choose to make they are bound to disappoint a group of fans. Should they simply listen to their fans and all their requests and suggestions? certainly not. To this day I still see posts by people saying that Morrowind's combat system is far superior to that of Oblivion's, which in my opinion, is even worse than daggerfall's. On the other hand we have people praising Oblivion's combat system and admiring the way it was done. The devs simply cannot amuse everyone.
There is so much I want to say about this subject but it was all said here before me so ... lets just leave it to the developers.
Regarding that Nostalgia filter link. It was a good and interesting read but in some parts, the writer seems to suggest that every newer game is better than older ones in every way and whoever says otherwise is the wearing those nostalgia goggles.