How many times you have been to a crash site means nothing and does not add anything to your argument.
There are many reasons why an aircraft can be off course. If your FO says to you multiple times things such as he is showing off course and full scale localizer deflection and that the GPS is also showing off course, reminds you about a hill that is on the off course track, suggests going around to figure things out and then you ignore him, continue and hit the hill, you are not going to look like a very professional pilot.
There are first links in the potential chain of events on every flight.