Welcome to Anandtech, StatsManD.
In case you havnt noticed, quite a few people must express their contempt for other cultures - an inevitable symptom for those who suffer a severe case of cultural superiority complex and you are bound to see some of that closed-mindedness with some 150k active members.
Better yet, the whole forum tends to be on a rather cynical and unfriendly side in my experience. You would be better served to posts rants/questions of that nature at a more appropriate place like animesuki forums or whatnot. Here, people would love to talk about techie stuff here in general, but keep your hobbies to yourself; dont expect to see any engaging discussions on any japanese subculture here cuz there wont be any.
As for your rant, I cant really comment on Scryed, having not seen it. Personally, I do not feel that a deviation from the original is necessarily a bad thing. Face it, you are going to modify whatever manga/novel/game to fit the production time/budget/airing time limitations of a TV show either way; the question then becomes, how well you do it. A recent discussion on Asatte no Houkou reveals how the creators could interpret a given material to make it befit their version of presentation, and do it well while at it. The series would not have been half as powerful had it strictly followed the original, and perhaps would not have received all that warm response it is enjoying now.
Many lamented how humor (which happens to be what the half of the game is about) was essentially eliminated in Utawarerumono anime conversion. I felt that they really could have kept some key things there (i.e. the bridge scene); however, the series was generally a very satisfying experience, chiefly due to the director's ability to be focused on setting its own tone and sticking with it. A counter-example? Fate/Stay Night: useless humor at wrong places is definitely worse than not having enough of it. You just cant help noticing those scenes were awkwardly injected to be "on-course", supposedly in an attempt to stay true to the original. Yet that fails miserably, as the show chose to be different from the game to begin with, and thus a lazy practice of not modifying scenes that only work for the original turns it into something completely unnatural.
To sum it up, being different isnt necessarily a bad thing, nor it could be avoided. I dont see a problem there as long as it works well for the given context.
edit : a typo galore, as usual 🙂