I have to agree that seems like risky behavior even thought we don't know what the OP's complete story is.
I have had my AMEX platinum for about 3 years. My story is a bit strange I had never owned an AMEX product. I was considering the plat for the FHR when I got a call offering me a green card. Great I said but I really want a platinum. THe exact sequence of events escapes me but as I recall I applied for the green and within a few days I had the platinum.
Right away I started charging and there is absolutely no pattern to my spending. I might have a charge at the local hardware store and the next day be at an RC hotel somewhere. Early on I got a couple calls from AMEX just to check with me becuase my patern seemed strange, I actually like that they seem to be watching out for themselves and me. Once they caught that someone was trying to use my card for some online purchases and sent me a new card right away
I always pay my account in full on time and my last statement was my largest ever due to purchase of some equipment for our business. This was right in the middle of the financial crisis. Bill was paid ontime as always. I have never had anything but excellent service from AMEX. Never a hint of a review.
Right now everyone AMEX included has to watch their back