Anyone who doesn't like something is likely to cal it a sham.
(You know this) There are two types of liability protection - contract and tort (primarily injury and property damage). Whether one or the other, the liability protection afforded to a member of an LLC, a shareholder in a small corporation, an employee of a company is limited to the acts of the company, not the acts of an individual. In contracts for example, if a vendor makes the deal with the company (as oppose to the individual), the company is the responsible party. To get through to the individual (assuming the individual didn't guarantee the transaction, like 99% of the bank loans to small companies) would require "piercing the veil." That can be difficult or easy depending on state law, but most "piercing" cases have one of two bases: (1) inadequate funding of the company; and (2) the failure of the members of the company to treat it as a company independent from themselves.
In the tort arena, we are playing by slightly different rules. The human being who commits the "bad act" is personally liable for the consequences. If she is on company business, the company will be liable, but the human being is liable too. The best non-aviation example I can think of (which I like specifically because it surprises a lot of people) is, if the driver of a UPS truck causes an accident, both UPS and the driver are liable. Not because of "piercing." Because it's how the system is designed to work to begin with.
So for our aircraft ownership LLC, If the pilot causes an accident; the pilot is responsible. But that's also why, in a properly managed LLC, Owner A is generally not personally liable Owner B's accident absent something more than the bare fact an accident took place.
Privacy is a different issue. That depends a lot on state law. In some states, the identity of the members of the LLC is a public record; in others not. Even when it is not part of the state's public record, the FAA requires a listing of the members of the LLC.