We talked to Jos V about this, and he stopped using the import tool. Unfortunately, we didn't manage to get him to finish the work. The fixme tag does work well to detect people who don't follow our import guidelines... Making Notes about this is not really useful though, we're well aware of the issue. If you want to discuss with the import crew, do join us on the dedicated Element channel at https://app.element.io/#/room/#osmbe-grb:matrix.org
General information at https://wiki.openstreetmap.org/wiki/WikiProject_Belgium/Building_and_address_import
