That doesn't prove anything. Mine dropped the striker 2 times in 40 years with no trigger pull and that was 20 years apart. Fortunately for me it was on an empty chamber both times. I went with a Timney after the 2nd time. Seems like it was about $100 and took me 10-15 minutes. No way I'd be sending my gun back to Remington for this since the new X Mark trigger isn't particularly good.
This isn't a manufacturing defect that only effects the occasional rifle. It is a design flaw. The Walker trigger is the only trigger ever designed with a trigger connector (a tiny metal bar between the trigger and sear) that is free to move around inside the trigger assembly as the gun is handled. If the connector just happens to line up in the right spot at the wrong time every single one of these guns will drop the striker when the safety is moved to the fire position. If yours hasn't done it yet then give it a little more time and handling.
And yes, if the trigger is dirty, or has been improperly adjusted it will do this too; so will any trigger made by anyone. But only the Remington trigger has shown that it will do this right out of the box. Even while still on the assembly line.