That Chris O'Neill showed the finger to the press seems to only be an issue outside Sweden, I haven't seen any mentioning of it in any Swedish newspapers, maybe the photo will show up in one of the gossip mags that write about royals, but it won't be an issue here. Most Swedes are not especially interested in the royals, the media is more interested than the general public, and my guess is that if the photo was to appear in Swedish press most people would laugh about it, and the younger ones would probably think he did the right thing showing his opinion about the paps. I would think that many royals have wanted to do the same, and it's something I could imagine Carl Philip do one day, or something the king could have done while he was a crown prince, so I doubt the king is upset about the gesture and it's definitely not a reason for Madeleine and Chris to break their engagement.
To me this discussion is "en storm i ett vattenglas" (a gale in a glass of water).
I don't think there will be much of a discussion here in Sweden about Chris O'Neill and his role in the SRF, he will be an in-law and show up at some occasions, but on the whole he won't be important, whether he's liked or not won't reflect in any way on princess Madeleine, he will matter as little as John Ambler, Hansi Hohenzollern, Niclas Silfverschiöld or Tord Magnusson have done in Sweden when it comes to the public opinion about their wives.