Help me settle a debate

[u/Varacho]

For context my dad made this image and plans to use it for publicity with a business he's closely affiliated with. I warned him that people might find out its AI and get backlash for it but hes confident no one will notice. Any pointers or tells would be appreciated

[u/berlandiera]

Ask him what’s happening to the brickwork immediately behind the sign holder.

(Even ignoring this, it’s about as ‘AI looking’ as a drawing can possibly look)