I don't see Tenkara as being full of technical tactics, but I also don't see it as simple as that bamboo pole and a piece of mono like when I was a child, and yes I caught fish then too. Tenkara is about presentation. Sure it can be as simple as you want, but again right tool makes life much more enjoyable.
I watched even Joan Wulff fishing a Tenkara. The nice roll and light fly presentation...from a tapered line.