Lakia laki's comments

The next chapter will either have Jamie shooting TJ or Ian, or Ian rejecting TJ because everything is happening so suddenly. But if the author didn’t want TJ to be the endgame, she shouldn’t have had him give up the organization and sell the mansion he bought for them. Now TJ has nothing left except Ian.

It would hurt too much for them to lose each other now. Even if Ian rejected TJ and left with Jo, he would never be happy. He would spend the rest of his life regretting it—just like he regretted the harsh words he said during their bathroom argument. He might find a 'normal' life, but he would always be thinking about how much he hurt TJ, and he would never truly be at peace. But seriously, I want all three of them to have their own happy ending. After everything, they all deserve some peace.

You make a great point about Jamie being a huge obstacle he's definitely the last major external threat.
But about the endgame timing, the author Actually said that we would feel the endgame in the middle of the last season, So I think we might be in that moment right now