Ethically, reviewers should be a bit more transparent and upfront about their business arrangements with businesses that sell figures. Some are, some aren't, and some who aren't make it pretty obvious if you read between the lines, even if they don't talk about it.
Which is generally why I don't watch video reviews. Maybe if I need to check something on a figure, but I'd rather get honest feedback from people who have nothing to gain one way or another. Which is why forums like this are still relevant and important for collectors.
I don't begrudge anyone for running a business, because that's what it is and it can be a lot of work. But some aspects of how things are done sometimes, I just don't agree with personally.