Alone

Does "Kaye was motivated by this ambition alone" mean "it was only Kaye who was motivated by this ambition, and not Roger"?

Text:
A similar, although better tolerated, example is Roger, a living artwork who ‘exhibited’ outside the Millbank Tate Gallery in London in the mid to late 1990s. Again, it is easy to be cynical about the sort of gesture that Kaye was making by taking a homeless man from the streets and turning him into a sort of sideshow, not only because it was a self-confessed attempt to steal some limelight and further Kaye’s artistic career, but also because patronage seemed, in this case, to verge on patronisation and exploitation.
This view, however, assumes that Roger was some sort of passive victim of Kaye’s self-promotional ambitions and that Kaye was motivated by this ambition alone, neither of which were by any means the entire truth. It is clear, from footage taken for the Channel 4 arthouse documentary, that Roger developed a degree of agency and advocacy through his employment as a living artwork: he spoke out on issues of homelessness; he gained access to and took pleasure in art; and he ended up with somewhere to live and an income to survive on. He also clearly reflected upon his situation and made his own evaluations of it.