And he doesn't think you NOT making such a big deal out of it after only seeing him for 6m is too much to ask.
Why should he move any photo ?
You've known this guy for a VERY short time. You haven't got any right to ask this of him.
You are way too over invested in this for such a short relationship. You've lost all perspective here.
You are extremely insecure in yourself and need to address that. Before you embark on any relationship with anyone.
Have you been out with anyone else, who does have a former partner that is still around?
If they were bitter enemies, you do know that this in itself is a complete no-no?
A guy with a good relationship with his ex, is a better bet than one that doesn't.
Have you considered that this man gets support from his parents and hers, their mutual friends and wider circle, and if he dumps her memory the instant he meets the next woman he sees (and I say again, 6m is nothing wrt relationship duration) then he's likely to lose all sympathy and support from the people in his life, for someone who may or may not work out.
If someone 'told' me to move a photo of someone i'd lost, i'd bin em. If I were too fragile to do that i'd probably move the photo to a more prominent position too tbh.
Some widowers do hook up soon after they lose their dp/dw, because they need the physical love/practical day to day stuff. It's selfish of them somehow as emotionally they're unavailable.
You insisting he do anything wrt his deceased ex is totally out of order. You don't have that right at all.
He could be a bastard, but we don't know that. After 6m, neither do you.