That is NOT what the article says:

In my experience, those people who are claiming that Registry Booster is malware and will not uninstall are not that computer literate themselves. In our tests, it DOES remove easily and causes no harm to our test computers. There are differing opinions out there on how effective the software is, but I am confident (at this point) that there is nothing dangerous about their free scan. People need to realize that ANY program that affects the Windows registry has the possibility of messing something up. That is why it is SO important to back up your registry before running any scanning software, whether it be Registry Booster or something else.