How is the parent both right and I should be glad my family member is getting treatment? This doesn't make sense. If the treatment is worse and used to control

How is the parent both right and I should be glad my family member is getting treatment? This doesn't make sense. If the treatment is worse and used to control undesirable thought patterns (that's what the parent claims) than surely you mean to say the alternative is better? Ie, letting the illness take its course and the delusional thinking set in. Or what are you saying? Because it doesn't make much sense to me.