You may as well ask whether increasing the value of a touchdown to 8 points would be better. Better at what? Doesn't matter, the game already has rules, and few of those who are interested in the sport want it to change.
But, more fundamentally, it is common for newer USPSA shooters to feel as you feel. It is true that there is literally no way to be accurate enough to win while being slow. You must get the speed up in USPSA.
That does not mean, however, that accuracy doesn't matter. Assuming a match has some high-level competition in it, it is routine for the better shooters to all have broadly similar times, with accuracy at speed making the difference.
And all those guys going fast and taking C's while putting up big HF... rest assured that a lot of them can shoot fairly small groups in slow fire. Just like a formula one or nascar race driver can absolutely maintain his lane with scrupulous precision and accelerate/brake gently on the streets in traffic. The fact that they hang tires over fault lines or tailgate or whatever on race day doesn't mean they cannot drive "carefully." It means that they are doing what is needed to win.