Smaller holes will require a pre-filter to keep particles from clogging the holes. Almost all drip irrigation systems need a pre-filter and some kind of pressure limiter.
As for the watering head, its mostly ill conceived, but looks snazzy. I’d much rather have regulated drips placed under each plant, just below their leaf line. Regulated drips come in .5, 1 and 2 gallon/hour varieties for example. With small watering tasks, only regulated drips can guarantee a precise delivery of water to a plant. For example, a .5 g/h drip delivers approximately 1 oz/min of water. Its then rather straight forward to calculate how much water you need based on transvaporation, soil type, plant type, humidity, temp and other factors. Thats the sort of thing computers, especially with a real time weather feed are good at.
Additionally, dripping below the leaf line means you can drip during daylight hours. Spaying plants during the day will scorch the leaves. Spraying at night will lead to fungus/mold issues if not carefully controlled. Spraying waters weeds as well as desirable plants. Drips water only your plants and can run when you actually need water.