Reddit reviews Hoover Hives 10 Frame Langstroth Beehive Dipped in 100% Beeswax Includes Wooden Frames & Waxed Foundations (2 Deep Boxes, 1 Medium Box)

Do you mean the one from here? IMHO, while the writing wasn't great and needed some proofreading, their arguments were well thought out and were as follows:

1. The plastic of this device just isn't a good substitute for the bees natural wax, which can resonate with them to send messages and holds history like our books and forums. As well, plastic off-gasses, which doesn't help the bees either.
   
2. That beekeeping is supposed to be about the beekeeper caring for the bees, not as a tap for honey at home. The beekeeper is supposed to understand what the bees like, what time of year, the humidity;not just use the bees as a fish of honey factory. While this is an emotional argument, it is also the opinion of the author and they never claimed to be coming from a pure facts based approach.
   
3. It's more expensive than a Langstroth hive, which looked to be true at the time of the article. The flow hive was at least $600 while a Langstroth is ~$200, at least when I'm writing this.
   
   TL;DR arguments were that the flow hive is bad for bees, bad for human-bee communication, and is more expensive.
   
   I would say these are clear, if a little hard to parse; her first argument actually has good scientific backing, the last is pure economics, and the second is more of a emotional plea than anything scientific.