According to some folks on this forum they can come out, but they sure don't want to easily. My service advisor recommended just asking for separate caps.
The lug covers pop right off as well, there are basic tools like https://www.amazon.com/dp/B0C61QXJSW or you may already have something that looks like that (I did, in a PC repair toolset).
I think I was wrong in my first response up there. The center caps are attached to the aero inserts, but I've been told they can be separated. Still haven't tried it myself.
It only cost me something like $20 per wheel to buy the inserts and bolt covers from the service center. They also installed them right there. I'm not sure it's worth the effort and potentially damaging the full insert.