The problems is the same that all networks have, too much time to fill, too little programing. Even the big networks have re-runs because there is just not enough good content to fill all the hours. It is expensive to produce TV shows, and even the cheapo types that the Food Network has (production wise) are expensive to make. That is why reality shows and those stupid cop chase shows are all over the place. They are very cheap to produce compared to drama and sitcoms.
Food network does need more quality programing, but the advertizing $$$ won't support the cost of producing the great types of shows that used to be on PBS etc. There has to be lots of cheap filler like Top 5 and Unwrapped in order to fill the time.
When in doubt, open another bottle.