Every company, including Apple has bad machines. This is an Apple centric site so I expect bashing and inflated horror stories of non Apple products to occur.. There was a guy here at MR a few years ago that had to exchange like 10 MacBook Pro's if I remember correctly...
In the case of the videos in the OP, I think a $900 gaming desktop would be considered low end? Honest Q as i don't game but I believe that would be a low end machine they are reviewing. Low end machines are always going to have bloat and well, low end components and build quality. I find it odd they purchased a low end machine only to complain that it's, well, ya know, low end!
The only real issue I see in those videos are the up sales and the unexpected charges. That does need to be addressed as it's shady, very shady...