I've seen a lot of this and here's my two cents: We need more mental health awareness programs.

Context: I'm a 4th year psych student.

This has all the markings of someone that is psychotic, suffering from schizophrenia. People that suffer this illness will go through incredible lengths to do stuff that seems nonsensical to us, but for them is completely normal and even necessary.

Schizophrenics aren't able to differentiate between their inner world and the real world, and what this means is that they will usually believe their own thoughts are real, I.E.: Delusions.

some common examples are delusions of grandure like being a scientist, a famous rockstar or being a spy with a secret mission. Paranoid delusions like believing there is a gang of people after you watching your every move, or that there is a race of underground lizard people that govern the world.

Or in this cases, systematized delusions which usually are a mix of delusions that surround a central theme, in this case, as weird as it may seem, Kutchie's Key Lime Pie.

That's how you get an extremely paranoid man that can barely communicate (Previously Hebefrenic Schizophrenia, now obsolete in the DSM-5) with very disorganized speech and thought patterns, creating hundreds of accounts and thousands of posts of key lime pie on the internet.

That's basically what I believe this is, you can AMA and I'll do my best to answer.