Definitely a fake review, he appears to have a girlfriend at 4 mins 10 secs.
If you can afford the bit extra go for the Levoit LV-PUR131S or the Levoit LV-PUR131 they work really really well and was noticeable having them around the house, I leave them set to auto then it kicks in when it senses the air quality has dropped. The filters are easy to get hold of on amazon with prime if you have it and they last around 6 months depending on what sort of room you have them in. They are dual filtered as well one with a carbon layer for getting rid of smells out the air, I use one of mine in a smoke room and they manage to keep up removing smoke and smell out of the air. The Smart One https://www.amazon.co.uk/Purifier-Cleaner-Allergies-Eliminator-Warranty/dp/B07KXHFT55/ref=sr_1_3?dchild=1&keywords=Levoit+Smart+WiFi+Air+Purifiers+for+Home+48m%C2%B2&qid=1596724055&s=kitchen&sr=1-3 The Standard One https://www.amazon.co.uk/Levoit-Allergies-Eliminator-Filtration-LV-PUR131/dp/B077HSND9Z/ref=sr_1_4?dchild=1&keywords=Levoit+Smart+WiFi+Air+Purifiers+for+Home+48m%C2%B2&qid=1596724055&s=kitchen&sr=1-4 I haven't had an issue with it once and have noticed drastic improvements over other vendors. Hope this helps (y)
I only managed to see his gaping-mouth pic + knew his vid would be full of fake praise... Couldn't even stand to click to watch his vid (lol)
I only managed 25 seconds then switched it off (lol)
Good luck looking for replacement filters