It's so weird, I was just thinking this. I was trying to explain Heavy Rain's many plot holes to someone, and they kept writing it off as nitpicking. Some people are simply deluded. They can't accept that they would do anything wrong.
To some people, those plot holes (Whats his names black outs, etc) are nitpicks. Some people are willing to let go of what some others consider negative points towards a game, and that's perfectly fine, we should not devolve into calling others deluded because they can brush of aspects that others can't.
I always come back to the idea that nothing is inherently good or bad, but when people intergrate themselves into that something it can be swung either way. For example, Mass Effect (the whole series) has people who hate it, people who love it, and people who are indifferent, this isn't because it is a bad or good game, it's because some people enjoyed the story told throughout the series and the game mechanics, and others did not. Some people could suspend their disbelief, others demanded a legitamte answer based in fact/reasoning as to why certain things occured. That doesn't make the people who loved the game deluded anymore than it makes the people who hated it intelligent.
The only time where I will say something IS bad is when it fails in the basic mechanics of it's formation. If someone is singing, and can't hold a note, they are a bad singer. If a film has sound coming in and out at various levels and the cuts are visible due to a short space of blackness, then that is a bad film. If someone writes a novel, but continually changes the main character's name, has poor puncuation and grammar (like I do), then that novel is a bad novel. As for a bad video game, I'd say the only thing that qualifies as being bad is something that is literally unplayable. You can play Mass Effect, you can play Sonic 06, you can play COD, you can play Medal of Honour: Warfighter, and you can play Aliens: Colonial Marines. That doesn't make them instantly good, but it does mean that they are well formed enough for a subjective opinion to be formed on them. The ONLY game I have seen so far which I believe is inherently bad is Steel Battalion: Heavy Armor. If you have watched any footage of the game, or have played it yourself, YOU KNOW that this game is basically unplayable.
So yeah, I guess to answer OP's question, while I have seen someone try and convince themselves that they liked a game, only to come out and say they thought it was terrible a few months later, I believe that the majority is no more right than the minority. Games are subjective, and to say someone doesn't like it and that they're lying to themselves is ignorant.