“Great” meaning “very large”, not “very good”.

Gatsby turned himself into a larger than life character.

That is what I think the title is trying to get at.

'Great' doesn't always mean good. It can just mean notable or remarkableness. (https://www.merriam-webster.com/dictionary/great). Gatsby the man was so known on so many levels it is actual theme/commentary within the book.

I think it's pretty much accepted that Gatsby is not a good person.

Isn't the tension between Gatsby's great image and his complex, problematic actuality kind of the point of the story?

(My bonus interpretation: it's also about how America looks like Gatsby's lavish party spot from afar with its green pier light beckoning, yet once you get close it's more like the valley of ashes, its people downtrodden and consumed by jealousy to the point of violence)

Remember when he was side piecin' and that chick that was driving his car hit someone and they just left them there? Yeah

Wait until you realize that Nick was a piece of shit himself.

I think we are supposed to think about Gatsby the same way the narrator, Nick, thinks about Gatsby.

A great man, a true romantic, but not one suited to this corrupt, fallible world. His relationship to Daisy was a bit more complex than just stalking, she did love him, she just wasn't capable of leaving Tom.

"No— Gatsby turned out all right at the end. It is what preyed on Gatsby, what foul dust floated in the wake of his dreams that temporarily closed out my interest in the abortive sorrows and short-winded elations of men"

Wait what, NES game?

I love how every comment is taking this question dead seriously.

But you might be onto something, old sport