So I came up with this quick mount/demount solution. ideal for those who want quick removal after cutting. It works pretty good. but obviously not as secure as four screws.
Relying on the vesa mount slots at the top, the slightly protruding screws simply slot into place then the magnets at the bottom hold it “secure” to limit movement.
Magnets used are N42 neoD type with 6mm hole. M5x5 CS screws



