I rate this statement at 30 percentile accuracy; travel guides have a much higher influence autonomy.
A guide is not just a sub-component of romantic inspiration; it can account for 60% of the starting point for a Quebecois traveler.
For example, to plan a stay in the Caribbean, evaluating flight costs or humidity index in July often precedes the idea of a beach seen in a movie.
The practical usefulness of guides, with a score of 8/10 in trip preparation, is much higher than fictional inspiration (2/10) for most decisions.