The problem with “if done properly” is that you actually have to go and check. If you just “hope that it is done properly” you can have a lot of surprises, like

The problem with “if done properly” is that you actually have to go and check. If you just “hope that it is done properly” you can have a lot of surprises, like lights going out when the sink gets full of water. Or spicy dishwashers. If you don’t know whether it’s properly done, it’s much more efficient to throw a ground cable from the nearest service junction than it is to “hope” and then have to fix things later.