If you remove that looping VGA cable, the MLD display will function just like a standard display, the front LCD will display, but nothing will display on the rear LCD screen.
So all standard screen games will display just fine.
I replaced mine a few weeks ago just because the original one had a plug that wasn't seating properly and colors were flickering a bit on the rear display in games.
While you "can" use any VGA cable, I got a 1.5ft one so there's not a bunch of extra cable in the cabinet. The one below worked perfectly.
https://www.amazon.com/dp/B07HNXC5LZ