No I get u fully. 100%. For me it's not about about her body because some people can actually look like that.
The problem is because the author has given her the personality of a elementary school child. She has no empathy, compassion, responsibility, everyone pampers (esp. The male characters esp. her celestial, indulges her like she is a child) & this part is still palatable but she seems to do nothing for the world or even her family.
Mind u, not every can have such mental weight. But also her family is lower middle class during her father's death. He dies tragically & money was a prominent factor. This 20 year woman is also an S-Rank who can do much to avoid the tragedy her father went through but she passes by her life with chips & games (lol not sure which gamer in the world will ignore game world that became reality, coz she manages to do that)

Am I the only one who sees jyo as a minor and got incredibly perturbed when the recent scene came on. might just be because she's basically a loli but idk