Saw this question posted on Facebook and I realized I had never thought of it this way.
Was there anything special about Hot Rod that made him "the chosen one?" Or was it just that the Matrix was created for a specific purpose and was only ever going to open inside of Unicron, no matter who was holding it? Ultra Magnus couldn't open it on Junk, but that wasn't the right place or time. Maybe if it had been Magnus confronting Galvatron at the end of the movie, it would have opened for him then. Heck, for that matter, if Galvatron had kept hold of the Matrix and decided to use it to destroy his master, would it have opened for him?
Sure, Hot Rod got the "Prime" upgrade when it opened, but that was a special circumstance and doesn't really indicate that it's a sign of him being the chosen one. After all, it wasn't the Matrix that turned Orion Pax into Optimus Prime, that was just a physical rebuild by Alpha Trion.
Was there anything special about Hot Rod that made him "the chosen one?" Or was it just that the Matrix was created for a specific purpose and was only ever going to open inside of Unicron, no matter who was holding it? Ultra Magnus couldn't open it on Junk, but that wasn't the right place or time. Maybe if it had been Magnus confronting Galvatron at the end of the movie, it would have opened for him then. Heck, for that matter, if Galvatron had kept hold of the Matrix and decided to use it to destroy his master, would it have opened for him?
Sure, Hot Rod got the "Prime" upgrade when it opened, but that was a special circumstance and doesn't really indicate that it's a sign of him being the chosen one. After all, it wasn't the Matrix that turned Orion Pax into Optimus Prime, that was just a physical rebuild by Alpha Trion.