The answer to your question is technically Yes. You could potentially add spacers on the holes where the included mount sits and attach your mount hardware. HOWEVER, people buy this TV for the look. The attached mount allows the TV to sit flush on the wall making it look like a frame. What you are suggesting, with an existing mount, will separate the TV from the Wall so you won’t get the same look.
So if you’re going for the actual frame look, use the provided mount that comes with the TV, if you don’t care about the frame look, buy a cheaper TV. Hope that helps.