How? I didn’t think that at all. But that’s is an interesting theory.
I don't know how but it's just a feeling. The bottom obviously is extremely extremely unstable. From his stories it feels like he never had good times with his parents. He always imagines his parents being happy without him. And we don't know what the parents condition are which is also weird. It's just they're sick. And never a conversation between him and his parents are shown. I almost thought his parents couldn't talk
Even tho we get conversation between other insignificant characters
Everything points to something artificial happening
I thought exactly the same. As if he's feeding them wrong medicines intentionally.
I think the bottom made his parents sick. He's clearly unstable and the dad looked at him weird. And the coincidence of them being sick together is too sus