Maybe it'd be more accurate to refer to it as "risky".
When you say a fighter's technique is sloppy, it makes it sound like he doesn't know any better. He's taking a risk, have more room to swing but keeping his chin ungaurded.
I'm tired of people analysing MMA stand-up by suggesting the guys don't know what they're doing. They're professional fighters who adopt a style, that right or wrong, is how they feel most comfortable.