Speaking as a fly fisher on the waters of Western NC where many trout waters are smaller streams with tight quarters, long casts are difficult and seldom needed. Most of my casts on small streams are roll casts because brush inhibits traditional back casts. In addition, shorter casts provide better line control, the best drifts, and increase reaction time for hook sets.
I have not tried Tenkara, but feel like I have because I often fish with 8-10’ rods and seldom use my reel. In other words, other than balancing your rod, a reel is only a line holder on small streams. Therefore, Tenkara would seem to be a simpler set-up for carrying and fishing on small streams.