While some people may believe Google makes us stupid, I believe Google can make us whatever we use it for. Some people can form false opinions, or uneducated beliefs because they do not do research with credible resources. An example of this is the Anti-Vaccination movement. Many parents who are against vaccinations can do a simple Google search in their favor (vaccinations cause autism facts) and immediately come up with a multitude of resources that prove their theory right. Unfortunately, that is a very pointed search where facts can be skewed in their favor. However, if they would do any more than that research, they would realize that basically everything they are reading was false.
Google can be advantageous if the user chooses to use the information correctly and do proper research instead of basing their opinion on one or two incorrect articles. However, you can also find credible, reliable sources on Google. There are many peer reviewed articles on Google scholar and there are many .org / .gov websites that provide accurate, fact-based information. Additionally, even if the user chooses to use a simple .com (that is not Wikipedia, and there are proper citations and credible sources where the author got that information, it can definitely be used as an educational tool.