And as far as we're concerned, that isn't the case.
Based on what? Companies are going to have an easier time making money selling crappy but legal software than they are installing illegal viruses on computers and being quickly stopped by anti-virus scanners.
he can't uninstall it because it's a virus
Based on what? Like I said, he has to uninstall it from his system, not just Chrome. Trying to uninstall an extension that was packaged with software won't remove the software's installed files. They are in different folder. This is NOT an assumption, I have had this happen to me with a toolbar before.
Why are you bothered by an assumption when you're making one yourself?
Because I'm going on past experience with toolbars and the ads I've seen embedded into programs. You're going on nothing more than "it's obviously a virus".
No, but usually when it's basic software like this, and it literally CANNOT be removed without a cleanup, it's malware/viruses.
See above.