Oh no, remote #GeoParquet is much less fun in #QGIS than I thought. These few polygons took ~50 Megabytes to fetch. I guess it is not enough to just use #GDAL defaults.
Neither of these layer creation options helped:
ROW_GROUP_SIZE=1000
SORT_BY_BBOX=YES
WRITE_COVERING_BBOX=YES
HALP!
