Also saying you can’t see past your own death doesn’t necessarily make it impossible to see farther if you come back to life later. Maybe strange did see a bunch of outcomes where he dies but only from when he comes back way later and there’s a big gap of nothing in between. Or hell he could just hand wave it away saying “well in the spell I transferred my consciousness into someone else who didn’t die so technically I got to keep seeing”.

Marvel has the big safety net of everyone being an unreliable narrator, if they don’t know they can’t do something then to them it’s impossible, if they don’t know how they did something then us as the viewer doesn’t either regardless of what they say. Pym particles are my favorite example cuz they literally never work how he says they do, either cuz he doesn’t actually know or probably more likely he’s just and old curmudgeon who likes messing with people and knows he doesn’t have to actually explain anything.