tl,dr: Mon Confiado is suing someone for using him as the placeholder on the grocery store copypasta.
It's a stupid lawsuit and why I hate cyber libel. It's a meme! It's unfortunate that many took it literally (that's Filipinos on the internet for you), but to say the guy had malicious intent is ridiculous. What does he hope to gain by deliberately ruining your reputation?
At the same time, dude should have read the room and saved himself the trouble by just deleting it. Unlike Maria Ressa who could afford to be arrogant and pay legal fees because she can recoup those costs from the ego strokes she's getting and being martyrized, you're just some guy with a pseudonym and lacking in allies. Take the L and live another day. Too late for that, though!