Sure and that is the practice with all tech product reviews now, so that the company can coordinate reviews with the actual public launch.
So they have to get them units to review weeks before the official launch date.
It doesn't mean the reviewers are compromised. That is unless the company is giving them other benefits, such as free trips, swag or maybe outright cash.
You just have to look the reviewer's track record, whether their reviews were mostly right.
I think the reviews would be interesting if they considered price in their review though.
Exactly this.
The way YouTube reviews generally work is they all need to be out at the same time for any new product to be fair to all creators. That is one very important reason why review embargos exist. Most of the time, they don't get to keep these review kits either, so if they actually want to own the product they have to go out and buy it like everyone else.
The main problem with YouTube reviews is that some companies will stop sending future products to certain channels to review if they are not positive. Bigger channels don't care, since they have the funds to buy it themselves if they need to, but the smaller channels can end up being put in a very difficult position that tests their integrity. In that case, the manufacturer is the one to blame for the "bullying". I have no clue if DJI does this or not but in the PC component world, manufacturers retaliating like this is a known problem, and the better YouTubers call them out on it.
YouTubers need time to make their review, so it would be impossible for them to acquire the
M3 through normal retail channels with enough time to publish a review the instant the embargo lifts.
If you are a YouTuber who has their review up a week later than everyone else, the video will not do as well and the YouTube algorithm will not be favorable for your video. The majority of the viewers are going to be there right at launch watching everything they can find and that is a very important audience to capture, and will help keep the video near the top of the search list as time goes on.
The best way to judge whether a reviewer is impartial is to look at their history. If they are regularly way off base, I wouldn't even bother watching their
M3 review. However if they have a history of objectiveness and can draw on valuable experience as a professional or creator to make conclusions/recommendations, that is probably going to be a worthwhile review to watch.
The reviewers that are overly enthusiastic and just blurt out specs while flying it around and not actually showing you much of anything usually aren't worth your time, at least in my opinion.