Pictures. Far back, top of post, bottom of post.
Since there’s (I’ll call it) capping on the bottom of the beam that is continuous, and that capping runs between the top of the post and the covered beam, then the post is decorative. Think about it. If the post was load-bearing, that capping wouldn’t be in between the two load-path components. It would have been cut around it.
An inspection tip: Check for a line where the top of the concrete porch pour was. It may be very faint, but it’ll be there. And it’ll indicate that the concrete porch settled, and took the decorative post with it.
Here’s a typical series of pics I take of a porch. Far away pics, with a few close-ups. Digital pictures are free. And so, the more the better.
(actually there’s more pics, but we’re limited to 5 on the message board.)