You should write one. Most people don't perceive the problem to the extent you perceive it. Traction and customer acquisition will be very hard, so it depends

You should write one. Most people don't perceive the problem to the extent you perceive it. Traction and customer acquisition will be very hard, so it depends on if you can make it worth your time. Many fake reviewees engage in the practice not because they're not shipping product as agreed, but because they perceive cheating as necessary. You'll also have to handle the edge cases of when the only seller for an item is disreputable (or faux-reputable).