Scouts can and do drop players entirely from their lists based on interviews and personalities (although generally this would need corroboration from other scouts).
All it takes is one bad apple in the dressing room to spoil the whole atmosphere, the beginning of cliques on the team who don't talk to each other, more and more players who are hard to get along with off the ice. Consensus top 10 players may well be dropped from an entire list on this basis. I've seen it done a number of times.
Basically, if you have a guy you rank #20 available but he looks like he'll have personality issues it is much better to take the guy you have rated #21 but seems to be a solid citizen. There is almost always someone of equal talent left to pick.
By the way, scouts travel together several hundred days of they year to the same locales and tournaments. Many are friends from the old days. So, of course they're going to talk frankly. Things aren't as secretive as you might imagine and it's hard to keep totally mum when it's your full-time job and maybe, your passion. It's hardly an inside secret that, say, Kessell can really fly or that Peckham is one tough SOB. Interestingly, scouts will make more outward negative comments than positive ones. Why? If you criticize a guy it still doesn't reveal who you are really interested in, who you are thinking that you might steal in the draft. I've heard scouts say a million things to those otside their own clubs but I've never heard one say something like, "That guy's expected to go low but we really like him and we're gonna try and pick him earlier than expected in the draft".
Inside the club there are no holds barred. Hearing players descibed as gutless pukes or as certain anatomical parts and so on is part of the daily routine. And, yes, you can hear the positive gushing about certain players too.
If these scouts are old friends of Turnbuckle this type of talk may be quite normal. But they may not be too happy to see their candid remarks come out so frankly and directly on a public message board.