Earlier quoted context omitted.
I don't think the OP was arguing that Windows is currently a walled garden, but is arguing that Windows is moving in that direction.
If OP had said criticized Microsoft for moving toward being more closed, I would have completely agreed with him (to the extent that it is relevant to the link, which it isn't really). But he said "full steam ahead to the biggest walled garden on earth. We are still the Borg", and so his comment loses all credibility.
Ok, English is not my first language, and that "to" seems a bit ambiguous to me... But in context that was pretty clearly a move toward a walled garden, not a move done by a walled garden.