Brachos are definitely not a “magic pill”. It doesn’t accomplish much, unless the Rav actually davens or does something as a zchus for the individual.
I have a relative who is a real kabbalist. He doesn’t advertise himself, doesn’t accept money to meet with people, or anything like that. He just sits and learns all day. I was once at his house visiting, when someone came in to see him, who was having a difficult time. She explained her situation to him. He sat there, with his eyes closed, for a minute, without saying anything. Then he opened his eyes, and said to her, “IY”H Hashem will help.” She left the house. My relative turned to us and asked to be excused for a few moments.
His son said to me, “You know why he sat there? A brachah on its own doesn’t do anything. He was thinking what he could take on as a zchus for this person. But he has so many others he’s doing things for, that he needs to figure out what he can do, and when. Now he excused himself because he’s going to his study daven and cry for half an hour or so for this person.”
That is what matters – actions, and tefillah. Just saying something nice doesn’t do much.