A very simple question to all poets of modern times

I am not much of a poet

Though people simply read me,

Perhaps praise me

And

Enjoy a laugh too,

Behind the computer’s screen

None can be seen.

But I have one question only.

When the readability increases

Say to 100 as per Flesch,

The grade level falls

To say very low

Perhaps zero

And

When the grade level rises

The readability percentage

Apparently decreases

Why is it so

And what's the remedy.

Thank you,