yep sorry, the Dropbox reference is a long-standing HN inside joke about comments like these. You can probably search to find the whole history of this reference, it's rather amusing.
I know the meme, which is why I was wondering, haha :) It's also the sort of thing that could've been meant entirely sincerely, in line with the comment of the person you were responding, being particularly painful to me as I've always had a massive mental block with Rubiks Cubes!
Like someone saying “less space than a nomad. Lame.”