I have two theories.
The first theory is that the next non-sweeps non-event that General Hospital will be bringing to us is the tale of an epidemic: a strain of particularly contagious and serious mental illness, the first symptom of which is saying things that are off the wall BONKERS.
The second theory is that the writers don't care even a little bit about the show that they are writing for (why should they? They have the most secure jobs on this planet. They have literally burned an American institution to the ground--I know it seems like I am misusing the word literally, but they actually did set fire to General Hospital--and continue to draw paychecks). "But didn't we just...?" "Yeah, so?" "But..." "Hasn't anyone ever told you to think outside the box? Continuity's the box, dude. The box can go to hell!"
I think the latter is more likely, although the former is both ridiculous and medically implausible enough to appeal to this particular writing staff.
It's not that the show's failure to maintain a consistent theme from day-to-day or scene-to-scene, even, is a new development. It's just...I hate it.