With the rise of the influencer and #spon, I feel that I can't trust a lot of online reviews - video or written. This goes for beauty products to movies. A lot of people are paid to say that they love something and get people to part with their money.
As a side note, some people that I used to work with have opened their own resturant and in recent days I noticed that TripAdvisor has taken all reviews down (about 4/5 months' worth). In their place they have put a message in red at the top of the screen about how they had reason to investigate that reviews were fake and written by those affiliated to the resturant. To be honest I had noticed that a lot of the more negative reviews would be quickly followed by 3/4 glowing reviews and I was skeptical as to their legitimacy.