Even canard wing aircrafts, which resistant to stall, advised AOA during landing , do not exceed more than 15 degrees. Generally low AOA means better efficiency and less drag. Just real life example: when sailing big cambered sails during low wind conditions, it is very difficult to go upwind or even maintain upwind position. Those who didn't rig right or have less skills have to walk upwind, ironically called "walk of shame". At low wind, we have to maintain hi angle of att