I dont think its quite the same thing. Jean died literally a day after she went Dark Phoenix. Its hard to villianize and come down on the bed when she ultimately paid for her sins before anyone could even fully process what happened. The stakes were different in AvX vs DPS. What Jean did in DPS happened in space and quite foreign and abstract to them. AvX was far more personal bc of the deciMation. and the state that the world was in. Each of the P5 were losing it and ended up doing awful things including killing Xavier, so yeah people were going to be more personally affected in a way they wouldnt have been in DPS.
When they did think that Dark Phoenix was back thanks to Mastermind in UXM 175, they were all ready to take her out and werent coming at "Jean" as a beloved friend, but the threat that she was percieved as. Wolverine stabbed Rachel and nearly killed her when he thought she ran the risk of becoming Dark Phoenix as well
Emma only worked for a very specific version of Scott. The man he became during the deciMation benefited from having someone with a questionable moral compass by his side. I think if we look at him throughout ost of his history, they would be such a mismatch otherwise. When he got what he needed, he discarded her and hasnt looked back. She kinda deserves better and I dont think ultimately Scott was every fitting. Im actually enjoying her and Iron Man and feel he is better suited for Emma
They reunited in UXM 22 and no Jean was single after coming back. She was romantically linked to Bishop in Age of X-Man but that was an alternate reality they were whisked to with their minds messed with