If he said this: He said I'm done with deadlift, squats, presses, and anything else that loads up the traps., then he basically said you were through training, because you can't use barbells without using your traps. Thank all the gods he is a fool. This injury is reminiscent of my own situation, arising over the course of decades and finally culminating in a fusion at C6-7. I have had absolutely no trouble with it since the surgery, having had 4-6 "cricks" in my neck per year for the 20 years previous. You would have 2 fused segments if they fused it; many people have 3.
But here's the deal: everybody your age has some mild degeneration in some disc somewhere, and nobody is going to operate on this diagnosis anyway, not without debilitating pain. Which you don't have yet. You'll know when you do, and when it is time, get it fixed without hesitation. Until then, chiropractic can probably manage it. Have you tried that yet?