I'm having a hard time understanding why this has been upvoted so much. I don't want to sound harsh but the code just looks like a ton of if-then-elses and rege

I'm having a hard time understanding why this has been upvoted so much. I don't want to sound harsh but the code just looks like a ton of if-then-elses and regexes. Where is the neural network? Or did I miss that somehow?