The thing I find about Shane is that someone earlier said he had a sad aura about him, and I agree.
Just my opinion but he seem to definitely lack confidence, and his quiet personality just made him fade I to the background for me.
If he had a standout dance, making him shine, then that would get him more noticed. JB also appeared quiet, and someone earlier described him as insipid amd when he was with Amy, it looked like he was in danger of leaving when he was in the first dance off. However, he dancing amd confidence has improved, and people are starting to take notice of him.
I think of Shane had just one standout dance, then it may have made a difference to honchos journey went. However, with 3 dance offs so early on, it was unlikely that he'd make it to the final.