If there's a low supply on clusters then the odds are that there's also not a particularly strong market for the food items either. Given that you "could" get 120 clusters every 1hour5 minutes, this is enough for 30-40 food items, which coincidentally will take you approximately 1 hour to craft.

When it comes to adjusting spawn rates or gathering quantities, it should be looked at in terms of quantity gathered vs quantity used, across all servers. Some servers will always have an abundance whilst others will have a low supply rate. 1 person complaining because they're able to gather 10x the amount of shards per hour than they can clusters, is kind of meaningless because it's ignoring the fact that the gathering rates are reflected in the quantities that are used for each recipe: recipes which use shards can use upwards of 40 per item (when crafting completely from scratch), vs an average of 3-4 for a 3/4star craft.