Reinforced pin replacement with a missing/quick link
You are correct, the pins have an interference fit in the outer plates only.
When a regular pin is forced out the hole in the outer plate is enlarged. The reinforced replacement pin has a slightly greater diameter than the regular pins and so forms a interference fit in the outer plate again. This is why you cannot replace the reinforced pin.
If a outer link with a reinforced pin is replaced with a quick link the deformed outer plates are discarded.