You'll have noticed that SG:I is a cartoon. And yes, evidently it's for kids, complete with gratuitous pseudo-educational content and conspicuous morals to the stories. It actually reminds me a little of "He-Man and the Masters of the Universe", in part for the everyone-stand-around-and-laugh-good-naturedly ending to some of the episodes. Of course, that comparison does Stargate: Infinity a disservice, as it's actually pretty sensible and well-made.
If, like me, you thought "ooh, Stargate!", then you're probably going to be disappointed, as this manages to be untrue to both the film and the TV series. There are DHDs, GDOs, stargates... but not quite as you might remember them. The "ancients" have apparently been completely reinvented, and the bad guys are a bunch of brutish sauroids who inexplicably carry Jaffar staff weapons and fly Mayan variant Goa'uld mother-ships. Much of that is necessary to dumb-down the content in order to capture fleeting attention spans, and to provide an antagonist alien enough to avoid suggesting that fighting real people is good, of course.
As entertainment, it's not too bad, though of course it's fantasy of the highest order, which you have to be willing to forgive. For example, despite its willingness to explain that you get a fair amount of energy from a hydrogen-oxygen combustion reaction, and that both can be derived from water, it kind of skips over the fact that you need to put energy in to extract the individual elements, so it isn't just water-in, power-out. Well, maybe they have a cold-fusion system capable of getting energy from the matter itself, and just use the hydrogen/oxygen as batteries...
One more thing worthy of note is the theme tune, which is utterly awful.
Overall, I give it three stars: there are far worse DVDs you could sit and watch (and also far better). Probably if I could regress to childhood, I'd give it four stars.