Now you're just ignoring bits of my post in favour of being angry and snarky. It isn't fair on people like me who spend a lot of money and time on new systems (2 years saving up for hardware, plus all the time it took me to learn how to build the thing), to then be told 'no, you may not have content that does your time and money justice, because some other people can't play it'. It's not 'fairness to everyone' taking the ball and going home because a couple of players have twisted their ankle.
Your personal decision to build yourself an awesome computer has nothing to do with Bioware's public statements about the game they were planning on releasing.
You chose to save up and invest in a high tech piece of hardware at a time when Bioware had given you every reason to believe that DAI would be supported on last gen and would therefore not give you some magical next gen experience. If you built a new system specifically for Dragon Age and then got upset that the game didn't make the most out of your system, that's on you. They never gave you any reason to believe it would. Had they chosen to limit the scope of future DLC in order to allow last gen to run it, Bioware would not have been misleading you.
On the other hand, last gen players may not have bought the game with an explicit promise that all future content would be supported, but if you argue that they could rationally have guessed they'd drop support for it half way through, I believe that would be disingenuous. By changing the scope of future DLC, Bioware did change the rules on all of those people.
People saying things are both equally selfish are wrong because one group is being told they should not get to experience anything so that the other group can get something nicer. The supposition that last gen can't handle any more DLC of any level of complexity is just that: supposition. And one that seems to be gaining popularity mainly because it offers justification for dropping support that will lead to shinier pixel people for some.
Also - are the PC minimum requirements going to increase? Is this something anyone's asked?