Maybe, but no more than users of mainstream OS's (read windows) ignore the serious problems that OS has had and chalk it up to market share not engineering.
Honestly, the architecture and design is really reasonably sound - the registry is a kludge, but nevermind that. The real problem is that the defaults are much too lax, and too much (legitimate) software is written with an expectation of lax permissions. It's sort of like building a bank vault, and then leaving the combination to the lock on a sticky next to the door - the problem isn't the design of the vault, it's the way the default security settings are set up that's the problem.