I sincerely hope you think that way bc it's fiction and that you don't think it's OK in real life..
First of, many of us may think it's hot that he's that obsessed /possessive with him, but manipulating him into thinking that not Going outside is the right think, is just wrong on many levels.
If our mc would do it on his own will and bc the mc thinks the ml is right, we would be more supportive I guess.
But the problem is, that the ml is forcing the mc to stay home even if it may be against his will( refering to the last chap. Where he asks the security guards to not let him go outside) which is why we react kind of mad/ sensitive.
I hope I could clarify it^^ and please don't be offended

Dont get mad at him, he is just trying to protect the only person he have