I suppose it depends whether "linear" is used in a looser, broadly descriptive sense (synonym: sequential, ongoing, cumulative), or more strictly, more narrowly, as a negative criticism (= game is too much of a restrictive straight line - without enough options, alternatives, divergences - not enough different game progressions & ultimate outcomes).
From the discussion, I understood an adverse criticism was being leveled - hence that the second ("normative") sense was being applied.
And that's why I made the points I did. I don't think the game is a one-track pony, especially as regards sex and love.
I'll just add one more point, then sign off on this (I promise).
The game is a proper graphic novel, it is going to end up with 18-20 chapters, few of them exactly short.
If you are (in fact) criticizing the game as being "linear" in the narrow ("one-track") sense, I wonder what physical capacity of game would be needed (- and time & effort required to build it all -) to make DfD as near to the wide openness of life as dammit. With our MC facing a wide open field, to go wherever he chooses.
I suspect Tolstoy and Proust might have to eat their hearts out ...
Anyway, that's just a view.
(EDIT PS: I wrote the above before seeing Balboy's post. Some of the same issues, but a different viewpoint.)