Ok, good info. So GP means to evoke the type of information shearing garbage some of us are wise enough to expect from unaligned and underspecified human-emulating but self-serving autonomous digital systems, and not comment on their sincere affection for information loss in clickbait titles that. . .
That's true, and people should learn to recognize it. But in general, sarcasm is easily misunderstood in pure text. You read it with a tone in your head, but they can't hear it.
Also, it's best to avoid it a site like this with many non-native English speakers. It's an extra layer of difficulty.