My take on this is no they don’t. As long as they are truthful they only report on the quality of the product and prevent many people of spending a lot of money from losing it by buying something that doesn’t work.
If your product is shit your company does not deserve to be shielded from the backlash, this is the core of (classic) capitalism after all.
An honest review isn’t what’s going to kill their business. Even a bad product in and of itself isn’t necessarily what could cause the death of their business — it’s their not adequately tempering consumer expectations. From the sounds of it, they’ve oversold what the product can actually do, and are charging a price based on this fantasy.
If you’re honest in your marketing as to what your product can actually do, and charge a corresponding price then consumers and reviewers may be more forgiving. Where companies like this one which are doing fairly experimental stuff fail is when they over-promise and under-deliver. And reviewers will always take them to task when they do that.