I think this is not a problem as bits like this seem to come and go in datasets

Hi, this seems unsuitable for the osm map. Please add your date to a umap or similar
https://umap.openstreetmap.fr/en/ which you can share.

Hi, the parking multipolygon had the outer rings joined thereby making it invalid. I deleted the multipolygon and made one simple polygon for the parking area.

Hi, I fixed a problem detected by osmi with Upper Goulburn State Forest where two polygons crossed due to simplification of the dataset and I fixed that.
I also noticed that the gaps between the polygons here are also part of the State Forest.
osm.org/#map=19/-37.560374/146.239078