perhaps the graphic designer had something else in mind and then accidentally left it in the background after heading a different direction. I could see myself going, "wait, fuck that if I put text here then I've got to flip it in the reflection, not worth it. " and undo my steps. I just can't find anymeaningful reason for it to be there.
My guess is you are looking at a watermark for the original creator of the image. It's Two L's one upsidedown: ⅂ L
perhaps the graphic designer had something else in mind and then accidentally left it in the background after heading a different direction. I could see myself going, "wait, fuck that if I put text here then I've got to flip it in the reflection, not worth it. " and undo my steps. I just can't find anymeaningful reason for it to be there.