It's interesting to me because when something involves free software being used in un-intended ways, many here in the HN community have no problem describing it as theft. However, when it involves copyright violation, there are huge arguments about word usage.
This is just a tactic to make theft more acceptable. When you use nice words like "copyright infringement", people don't associate negativity with it and over time, people don't have a problem with it.
Over the course of the last 10 years, it seems to have worked. It's sad that many from the open source community have to be so hypocritical.
Also,
Identity theft is still called theft, even though your identity is not actually stolen.