It doesn’t make sense to have it especially when the videobox is set to run automatically or on hover.
I realize on iOS it may not run automatically but once you hover over the image with a mouse, or tap it when scrolling, the play button should disappear (like it does on desktop).
If it’s the video player, you can design the play button per breakpoint but there’s not currently an option to remove it. If it autoplays and you set controls to Never when When playing, controls show. For me, it doesn’t show the play button at all.