If the allegations are true, Samsung acted reprehensibly but these guys were naive.
on the one hand, being subtly 'encouraged' to write favorable blog posts or reviews via enjoyable junkets, and
on the other hand, being expected to act as a real part of the PR team, wear company-branded clothing, and film promotional videos.
One is normal practice in tech journalism. The other is something quite different, and more aggressive. It seems like the bloggers expected the former - not especially naively - and got the latter via pressure and bait-and-switch.