Specific complaints? I dunno, it's hard to define "crap" at times. If I were to say the acting and script were "crap" that could be used against T1 and T2 to various extents. Instead I would say it's a boring, by the numbers action flick with few interesting moments, characters, or villains. Arnold is rather tame in the film; he's no longer a badass, and instead just a bloated bore. The t-bot is not menacing and I just couldn't take her seriously. Connor is dumb, and while he was whiny in T2 at least he was a cool enough to wear Public Enemy t-shirts

What are you gonna tell me next, Aliens v Predator was a good action flick? How about Van Helsing? Both of those movies are better than T3. Eh...not Van Helsing
I like the Terminator franchise but I'm certainly not a raving fanatic over it; T1 is good but hasn't aged well imo. T3 is just...crap