Adequately rated. When an organization without deep pockets has a lot of money tied up in several players, it's not easy to land a name player. The casual Spur fan hasn't heard or Roger Mason and had not heard of Ime Udoka last year, so they think "fail".
Many fans think an organization is better for signing guys with name value than averaging 58 wins a year. If those are the same fans doing the rating, well, that's why the FO is underappreciated.
When the Big Three are in decline/gone, then you can bash them (to a reasonable extent) for not landing the big names.