Not hard to do when you lie to people. They simply lied in their marketing about the game in so many aspects. Many features missing that were "promised". A lot of people pre-ordered the game (including me) because we believed their marketing. Then we got a buggy, unplayable game at launch which was missing half the things they lied about. Thank god I was able to get a refund from Sony.
I say all this as someone who has enjoyed the game immensely on PC - it's one of my favorite single player games of all time. It's just a shame that CDPR got greedy and tried to sell it on platforms that couldn't handle it.
It does have more than the usual amount of bugs, but they have patched it up so that you can play and enjoy without too much frustration.
Almost everything that's important in a game is well done. The combat, gameplay, story, characters, progression, music, everything is enjoyable.
I think the huge backslash had a lot to do with them lying about it running great on PS4, when it clearly didn't. It barely ran, and often bugged out.