(To generalize) many Zen traditions are seen as anti-intellectual and the Far East traditions are sometimes seen as anti-intellectual. Zen because of the use of art, work (wax-on, wax-off), koans, poetry, which is to go beyond thinking and studying, for a direct approach to enlightenment. The Far East schools such as Pure Land in the belief that enlightenment is too difficult in this era.
Theravada is probably one of the more intellectual schools of Buddhism, with our Abhidhamma, Visudhimagga, and veneration of the written Pali Canon. As Bhikkhu Pesala pointed out in this thread: viewtopic.php?f=24&t=16391
those who attained enlightenment rather quickly such as Bahiya had gained much mindfulness and advancement in previous lives. It is not likely any of us could gain enlightenment so quickly just by washing a cloth, repeating a mantra, or washing dishes. If intellectualism refers to reading and studying the Pali Canon, then there certainly can be no harm in that and only everything to gain. We don't need to be experts in Pali (although it doesn't hurt), nor do we need to memorize texts, but a good grasp of the material in the Pali Canon is very helpful, in my opinion.