The person who created the "Wuliang Heart Sutra" might have written it just because they were more familiar with it.
Just like people now, if they want to write something, they might write poems by Li Bai and Du Fu.
However, people nowadays aren't focused on how good these poems are.
It's well-known that Li Bai's poems are naturally good, but they look at how the person's calligraphy looks.
From the perspective of calligraphy, the Wuliang Heart Sutra is also quite ordinary. The main reason is that the person later known as the Infinite Old Ancestor wasn't trying to showcase their calligraphy.
His writing might be ordinary, but it expressed his inner feelings.
What he was thinking at the time, how the brush moved, where it was quick, where it was urgent, where it was slow.
This is also why it's called the Wuliang Heart Sutra, mainly because of the word "Heart."
