Thin is bad? common misconception
nothing wrong with thin-as long as it is strong enough
being thick just increases usable angles of attack no matter how you shape it
it does NOT increase lift.- never has- never will- It actually decreases absolute lift possibility
visualize a wing getting thicker and thicker -till it is as thick as it is broad
a square .
or a rod
no lift except if rotated rapidly

lift is made when pressure differences occur
No other way - birds or bees or aircraft
so-
a very thin wing makes lift at very low angle of attack-at very low speeds
you can move it or flap it
as long as there is pressure differences you can get lift