I started an RMA for my 1TB OLED Limited Edition on Sunday for a stuck/dead pixel but didn’t include a picture.
Valve got back to me and asked for one, and now I’m waiting for them to get back to me again.
Save yourself some time, include a picture of the problem when submitting an RMA.
When I requested replacements for 2 different monitors I bought off Newegg they never asked for any photo evidence so I kinda thought it would be the same RMAing my Deck for dead pixels. Understandable why they would ask for photos though.