The answer in She-Hulk’s post-credits stinger came directly from Kevin Feige 

www.theverge.com -By Charles Pulliam-Moore -She-Hulk’s head writer Jessica Gao says Kevin Feige challenged her to push the MCU’s boundaries
키워드: the answer, she-hulk, post-credits stinger, kevin feige, 디즈니 plus, series, marvel