Possibly AI, possibly younger folks (18-24). “Mental health incident” is only one step removed from algospeak like “unalived”, “seggs”, and “neurospicy”. A detached, memetic phrase that has been implanted into the lexicon by a toxic brew of algorithmic social media moderation and heavy exposure to LLM conversational patterns.

Or maybe just because language patterns change over time. You need to be hep to the new jive, daddy-o.