Technically, it's the whole background that has massive JPEG fragmentation, while the text is clearly two new layers with the bubbles paint-bucketed to match.
Bold of a Redditor to presume that consent should matter! (/s in case anyone gets confused 🤔 - see the joke here is the presumption that someone speaking as such is a Redditor, which as we all realize is just about the worst insult that someone can be called by:-P)