If it becomes the only talking point, it is because it is considered an important point of contention. Is the first time ND showed gameplay, so of course people are going to mention the price when the game it is not as "rebuilt" as it was infered by the combination of ND comments + the price.
Oh, they were mad alright, and that is why the other thread went to shit. Until that point, some people were praising the graphics, others where confused by the gameplay being the same (or similar), and there were a bunch of different, reasonable opinions. But then the crying started.
Bloodborne would be more justified just for the fact that the game is still 1080p and not even stable 30fps (framepacing galore), so it would benefit more from a facelift. Meanwhile you can play the already revised version of TLOU right now, and at 60fps if you want.
And just to be clear, as much as i liked that game, i wouldn't pay 80€ for a Bloodborne Remaster / Remake either.
Nor is the value of Bloodborne (now that you mention it), or anything really. And you don't know if they care or not, don't confuse critical thinking with disinsterest (or this one of those "only those who consume are real fans"?).
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Now let me ask you something: why is the criticism of the price, given the context, any different from people saying time and time again "it is the best game ever and i will buy it day one"? Why do you feel the need to acknowledge one and not the other? Because they are the same to me and you dont have to engage with either if you dont want to, and that is where the root of the problem lies: some are taking it personal, which is fucking absurd.
You like it and you want to buy it? Great. You don't for whatever reason? Also great. They are both perfectly valid opinions to post in a forum, but if you (not you in particular) only want positive opinions about something (criticizing the price of a game it is not being negative btw), then you don't want a forum, you want an echo chamber, and even if that is the case, you have many tools to ignore what you like to call with that word that starts with a t.