Although the numbers may be a good indication of how well the company is doing I would not place a lot of stock in the numbers themselves without more information. Some of that may be due to agents selling those products not communicating well with their prospects. In other words, not telling the prospect everything they need to know about what is and is not covered.
A more important bench mark of how well a company is doing would be to know the nature of the complaints they are receiving. A lot of prospects only hear what they want to hear and that usually consists of "how much does it cost". The details of a policy that the agent dutifully explained to them are not often remembered, especially when a claim is denied.
United American policies are not major med policies, but they don't cost a lot either. I am guessing that a lot of their complaints are because people assumed they were buying a poicy with more coverage because they weren't paying attention and then when a claim was denied or the policy didn't "pay enough" they filed a complaint. It may be a lot of "agent error" also as opposed to the company doing a substandard job.
Statistics and numbers can be used to come up with whatever results the person compiling them wants. For example, one out of three traffic accidents are caused by someone who has been drinking. Assuming that is true, then statistically the odds of getting in an accident are less if you are driving drunk than if you are driving sober. However, I would not recommend counting on that.