Oh yea, aggression can really mask a lot of other shortcomings and shortfalls when it comes to striking, especially against opponents who are hesitant about getting hit and more concerned with avoiding damage than handing it out.
There's a certain level of fearless and general not giving a fuck that really good brawlers, even at high levels, seem to have. Chris Leben comes to mind a lot of times regarding this kind of stuff. His technique was always ugly, but he was relentlessly agressive and DID NOT GIVE A SHIT ABOUT GETTING HIT!. It helped that he had a granit garbage can for a head, but he would walk through several well placed shots in many fights to land a big combo that would put his opponent on queer street.
It wasn't until he fought legit tacticians that he really got exposed. Example number one in my head is Anderson Silva.
When I made the thread, I was mostly thinking of Thiago Santos. But solid points nonetheless.
As for someone like Santos, if he got together with an elite striking coach like Hooft, I think the sky would be the limit. Could you imagine if he tightened his footwork up, cleaned up his combinations, and began utilizing just a little more defense? With the amount of aggression that guy brings to the table, he'd be a monster.
Technical aggression is where it's at.