A usable ground layout drawing of a typical 1-2 runway airport should be doable in one working day for a scenery developer. And even if it took two days it wouldn’t make much of a difference compared to the overall effort (usually).
According to simmarket comments the airport is well done and it costs almost 20€, a ground layout map for people without Navigraph account shouldn’t be a problem but it is absolutely not common standard.
In this case, if the chart doesn’t match the airport, I’d almost question the chart 
Anyway, if I enter “VVDN charts” into a well known search engine I get plenty of ground and approach charts, the first click was from 2016.