Well, that's an overgeneralization again
Over-generalisation is a given, when breaking down a complicated subject into a few lines
I'm not at all claiming Russian tech was all powerful, far from it. The simplicity, reliability and ease of repair is just the upside. The downside presents itself in things such as a lack of quality, especially in the finer niceties you'd expect to see in western tech.
For example I often see people rave on about how awesome the T34 was, and how poor the Sherman was (though if you ask me they both have a lot going for them). When the T34 was in fact bad in a number of ways (such as the initial reliability issues you pointed out), and the Sherman was very good in a number of much overlooked areas.
In these forums there is definitely a tendency for people to refer to easily comparable facts in game-relevant areas, such as armour, firepower, speed etc. But people don't pay enough attention to the finer details, like an auxiliary generator or a good radio.
Not quite sure what a good radio has to do with a thread about guns jamming. But oh well!
