In my opinion ADE is a powerful helper for designer of airports and the fault finder is part of ADE. It is right, you can design without AI-traffic, but I think AI-traffic complement airports.
Missing hold-short points you can see (or not) missing black rwy-lines you can't see generally.
In the meantime I know this difficulties and so I forget seldom to inspect the conditiones for a perfect AI-traffic. Except airports in the mountains
For beginners it would be better if the fault finder could indicate such missing things. (But I myself now can live without)