Finding both concepts attractive need not be as illogical as you suggest. I am attracted to the idea of getting back to basics, taking my time, and creating something by my own hand. It's therefore entirely natural that I should be attracted to both Slow Food and a similar ideal in photography. For me the analogy, however imperfect, is attractive because it links two things which appeal to me; it reflects my world view. That's neither illogical nor a foolish fallacy.
One thing I've learnt in over 20 years of working with all sorts of different people from different cultures, is that when someone says something I don't understand or acts in a way that confuses me, the first thing I should check is that I haven't made the mistake of assuming that everyone is like me.
When we make the mistake of assuming that, "everyone is like me," we tend to dismiss other people's opinions and arguments as foolish and illogical, rather than trying to understand what's behind them. Are you sure you're not making this mistake?