You make three points, correct me if I'm wrong:

1. The prophet said contradicting things.
2. The prophets' predictions are in a "safe zone" and can't prove anything (Non-Sequitur).
3. The prophet claimed the Final Hour would come before a certain person died.

For 1: The burden of proof is on you, you have failed to give any examples in your reply as I will now show.

For 2: The prophet made hundreds of predictions in his life time some of which have already come to pass. You are correct in that a single good prediction doesn't conclusively prove anything, however, having an unbroken record of good predictions with zero failed is proof enough for the pragmatist person.

And the prophet has never made a false prediction. Many so-called oracles have come after him and all of them have at least one failed prediction (Nostradamus for example).

For 3: You misunderstood the hadith, from the translation it says "your Last Hour" and the meaning stands in Arabic.

The meaning of their last hour is their own deaths not the calamity of Qiyama. And it came to pass that they all died before that young child.

This is well known for average muslims.

This is even made clear in the parentheses "he would see you dying".

A video a brother made with some predictions of the prophet that have already came to pass: https://www.youtube.com/watch?v=xZIqd_-1Zus

Edit: typo