Pretty Sure It's An Opinion. That fact Can Be Debated.
Answer:
In the first part
"Dear future me,
This is what I want you to know
You used to always cover things up
But now the world's gonna know"
Maybe change the last know (bolded) to "be aware", "realize", or "see"
Explanation:
It sounds repetative. Despite that, very good poem! :)
It sounds to me like time so. The poet is discussing the inevitable speedy passage of time is the choice I would be pick.
