How would the tone change if the word sarcastically replaced the stage direction absurdly?

In sonnet xix, at what point in his life did the speaker’s eyesight fail? in late spring at midlife when he lost his talent

What is the problem with the following sentence: cameron, who has an extreme and unreasonable suspicion of other people and their motives, suffers from paranoia which is a psychological disorder characterized by delusions of persecution or grandeur, was absolutely sure that someone was following him even though he was absolutely alone and hadn't seen a car for miles and miles.

Reading plus level g answers for the legendary loshu