Woah... I didn't realize people were so adamant about Luke being the bottom in the relationship. But messaging you about it is a bit excessive I think.
Personally, I wanted Luke to top because I was tired of the overconfident, taller guy always assuming the top role in most MM novels, BL manga and dramas.
Also I wanted Luke to top because it would be hotter hehe. And it was. I like gentle, level-headed and insecure tops. Jackson, as much as I love him, simply wasn't my ideal top. For now, that is, since I'm not done with the story yet!