They can pay for good reviews but once a vlogger and influencer become the victim of their false products or service they will be exposed, a vlogger or an influencer's review is worth a thousand paid reviews, although they also engage in paid reviews they made sure that before they promote products and services they have tried the product and it is really good because their reputation is at stake on those reviews.
Undoubtedly reviews from vloggers are worth more than hundreds of general reviews as they are aware of the product/service they try to promote/expose anything bad. But before being a victim of the vlogger a lot of general people might be scammed/get the wrong service/product for the fake reviews. So, we have to stay against this type of fake review.