You're familiar with how they all begin: "this video is sponsored by Squarespace." Ok, well, after that, they then feed you the next line, almost all of it verbatim, "I am not sponsored by (insert brand here). They have not paid me to do this review or told me what to say about it. This review is entirely my own and they don't know I'm making this video. I was/was not provided a sample for the purposes of this review. I am not biased in any way so you can trust what I'm about to say about this product." What they don't mention, obviously, is if they had to return that "review unit." But if you pay close attention, you may catch them using the product in later videos, especially if they were especially laudatory in their review. At least they weren't paid, right? Wrong. Payment is simply one form of compensation. That "review unit" usually comes along with an email that says, "you don't need to send this back to us." Simply put, the item itself is payment. Just because you didn't get to choose the item, the form of compensation or were given a special title associating you with their brand doesn't mean you weren't paid. They paid you with product and exclaiming otherwise is a flat out lie by Youtubers who persistently try to claim otherwise. Rarely are these items cameras and lenses; they're usually "soft goods" or accessories, like bags, lens filter kits, etc. that would likely get damaged during a thorough review period or whose cost of manufacture and/or retail price is so low that the cost of return, reconditioning and resale would consume all or more of the potential profit.
There's a certain couple on Youtube that talks a lot about photography and tends to harp on the value of education also pushes their "free" photography education courses online. You may even begin to believe some of their rhetoric or have heard some of their misinformation floating around. Mind you, much of the technical information they love to claim they're proficient in and knowledgeable about is shit. They'll contradict themselves within the span of 5 minutes. One example is their belief that "professional" lenses on a smaller sensor, like APS-C, will perform worse in sharpness because said lens isn't tuned for the sensor size, yet will then claim that some lenses on 35mm are so sharp, you get the ability to crop the image in closer than other lenses. Realize that these two things are a contradiction and a sharper lens will never give a sensor of fixed resolution higher resolution, perceived or otherwise. How do I know this? Simple physics and geometry. Let me explain:
Nikon recently released their first full frame mirrorless cameras, the Z6 and Z7, and it seems all of the professional and "professional" photographers on the internets are having a meltdown because it doesn't have, amongst other things, dual card slots. Well, news flash, Nikon didn't design these cameras for you. I know, weird, isn't it?
There are a handful of professional YouTubers like Tony & Chelsea Northup who, despite all of the facts proving otherwise, insist on claiming that smaller sensors have less bokeh, or increased field of view, compared to “full frame” sensors. Even worse are all of the morons, both pros and amateurs, who simply regurgitate their bullshit.