To be honest the Titan's reputation as brutes isn't very accurate. Many of them are fairly intellectual, though not as devoted to learning as warlocks. Vell Tarlowe has a distinct understanding of the blades of crota and actually informs Eriana about them in the grimoire card. Then Kabr, who managed to fashion armour, weapons and even the aegis out of broken vex which is a pretty large technological feat. Even Wei Ning has some pretty inspiring quotes like the one on the VoG titan mark.