Why do you think it's not a reasonable assertion? A lot of money was poured into the PR side when it came to defiance. It was suppose to be the next big science fiction "franchise" that was suppose to take over from star trek/stargate as claimed by many reporters and even syfy themselves. What a crock of shit that was. Once you have people brainwashed, it is very hard for people to change their minds. Marketing is all psychological.
I don't think it is reasonable because we don't have enough INFORMATION to make it reasonable. Almost 2 years in and we have seen it shed some 1 million people, which is bad sure, but it is, for whatever reason, holding it's audience steady at this point. As for Brainwashing, I think you underestimate just how hard it is to do it to the degree you are ascribing to the show/game. Defiance did not have a "brand" to fall back on and having a brand certainly does make it easier to brainwash people, but Defiance is more like the generic you get from ALDI trying to make a name for itself. As Jim notes when he makes his predictions -Defiance is above where SGU was at this point- AND SGU had a certain amount of brand loyalty built in to it's audience.
People read good things about defiance because how much stuff was being advertised about it. Besides, because stargate got cancelled, there isn't star trek on, people basically went to defiance because there isn't any big budget show that was on. Do you not see how people can be mislead or persuaded into liking a show just by good words?
Of course, I am VERY well aware of how marketing works dude, but there are other scifi, or arguably scifi skinned shows out there for them to choose from. Why are they not all on the Continuum train? or FS, or Last Ship or whatever?
People bashed the hell out of syfy for not renewing SGA or SGU( We celebrated for this). They also cancelled warehouse 13, Alphas, Being Human, BSG, Eureka, Caprica....I could go on but you get the idea. Do you not see why people will want defiance to succeed? They force themselves to watch it and like it, hoping that it will change or be like the shows I mentioned above when it's never going to be.
No, I don't see that because the bashing of SYFY tends to go hand in hand with the notion of boycotting the Channel as a whole for doing just what you said. People get angry and unreasonable when they loose their toys, and they chuck a freaking tanti on the net as a release valve. You go back to the old Nabble days and you saw it ALL the time, people just spewing as much profanity as they could string togeather with no coherent points. Then you got people like Uxmal who systematically decimated SGU simply because it was a bad show with little to no coherent structure besides writer desire. SGUS served as a sorta meeting point between the two where you could do both, or one or the other and have a laugh or have a think.
In short, I see no reason why a group of people, angry at SYFY would give two dingo nuts weather a show with no pedigree to speak of succeeds on a channel they hate. Even today you have people leery of any kind of Scifi on FOX based on their experiences with Firefly, and that was almost 12 years ago!!
Will good reviews get people to *watch* a show to give it a chance, YES. Will it maintain a stable audience? NO.