The diffrence between those two setences:
1)José has never seen the snow.
2)José never saw the snow.
They don't have the same meaning, therefore:
The first one conveys that José has never seen the snow lately, so he may saw it in the past.
The second one conveys that José didn't see the snow in the past so probably he may sees it now.
1) Unfortunately there seems to be a common misunderstanding that the present perfect tells us about events that have happened recently in the past, but then how do we account for normal usage like: "The world has never seen a day of peace" or "I haven't seen an elephant since I was a small child"?
Try thinking about the present perfect as a bridge between the past and the present, connecting a past event to the present context - any past event, no matter when it happened. So the present perfect tells us about how the past is affecting us now.
2) In your second example, you use the past tense, which tells doesn’t tell us anything about now, only about the past.
I hope that helps.
Student or Learner