Guidelines, not "orders".
If we want to be serious about stopping the spread then we need to take responsibility for our own actions.
Getting tested after being in close contact with an entire family that has tested positive seems like a no-brainer, regardless of what the guidelines suggest.
There are many places where the criteria for being tested isn't limited to showing symptoms. Direct contact with a COVID positive person fits that criteria here.
It goes right along with what we as individuals can do. We wear our masks, we social distance, we avoid large gatherings, some go to extremes like not going anywhere. Getting tested after being in close contact with a family for who knows how long is just part of that.