Yes, companies will likely suffer from untrue bad reviews due to the new law. People will be more likely to express negative views of a company if they are not barred from doing so by a non-disparagement clause. However, the law is a good one because it protects the right to free speech. Companies will have to work to protect themselves from untrue stories.
Non-disparagement clauses only make a company look guilty or like they are trying to cover up for something. They also take away encouragement for companies to strive to do a good job. There have been and always will be unfounded complaints in reviews, but there are also people who will write untrue positive reviews for a price. The bottom line is that everyone should use their common sense when reading ANYTHING, especially online.
It is more important that people be allowed to speak their minds freely, without having to worry about what the company will do to them in return. Most of the bad things people have to say about a company are true. That is why people say them. This is a helpful way to get honest information.
Although theere will always be untrue bad reviews, based on bad personal experiences or perceptions, companies will never suffer from these reviews. Their product or service will overcome any kind of false negativity aimed to cause harm to a company. People are able to tell and ignore a bad review located among many positive ones.