It doesn't either take skill to bypass a hardware filter - get another device! use any old phone and connect to any open wireless network!
Hardware has as many flaws as software does!
Yes and no.
The actual bypass is easy, plug out plug in. However, not every environment allows for that, if you run a server and have a full network, you cant really do it. As you are going to mess up the whole network.
In smaller environments you are right. But as said before, your line - as long as your hardware filters is plugged in - is filtered.
While the ease of removing it with hardware is an issue, the fact that a software filter doesn't filter the line at all is a way bigger issue. Since the ignorant user (read; more than 90%) thinks he has a filter (look they accepted his kids and he has a meshimer certificate, so how can you say its not filtered). When in fact he doesn't have a filter. Ipod, iPhones, laptops, playstations, a borrowed laptop. They can all now connect via his unfiltered internet because his permanent computer now has a software filter.
My original post also mentioned provider based filters. In cases where the network environment is not that much controlled (small office/home based office) a device based filter doesn't work either (this is specifically the case, where the user thinks he might bypass it for a small office, and for ANY home) and such a user must then take a provider based filter.