Well, I'm of the opinion that everything on the internet can't be trusted, when there is no way of verifying truth or false. Gaming review sites have a financial interest in making good reviews, so I always take that into the equation, and probably have to either read between the lines, or discern what they are focusing on or more importantly, what they ain't. One can quickly, with a critical mind, sense if the writer is genuine or not, in how they are praising it or not, selection of words etc. This of course, can be skewed when it comes to user reviews, since not all are native english speakers (like me) and therefore the selection of words can be limited (I consider myself fairly versed in the english language, and I draw the short straw fairly often, when I can't find the correct word I want to express)
Anyways, common people who writes reviews, often write them in a moment of various mental and emotional state of minds. So if the game is a disappointment in RPG avenues, and one loves RPG, that disappointment will shine through their review (e..g very low scores) while not giving the credit for the good sides of the game. It isn't all bad, because one can probably draw a red line through what the thing is, that most people are disappointed with. Sure, there will be cases, where people bash, just for the sake of it (just have a look on facebook or reddit if in doubt) but they are often easily singled out just by their wording alone.
As for certain people, speculating in, that the "old Fallout 1&2" are the ones doing the bashing, is hilarious, given the timeline. The people who loved 1&2 and hated the 3D versions (e.g. FO3 and NV) probably have more or less moved on now, or they are in the absolute minority (I could be wrong ofc, just stating my view) and I doubt their "hatred" for the 3D versions of Fallout run that deep (Fallout 1 came out almost 20 years ago, lol) Most of the old crowd from 1&2, are either still playing, or left the building. I'm from 1972, and have played all the Fallout games btw. I don't hate FO4, I just think there is plenty of room for improvement in certain areas, and I hope they will.
Edit: typo