Double standard for bitachon

As I go through the classic texts regarding parnossa I have noted a double standard

We are constantly told that G-d runs the world and therefore bad things are an indication either of punishment for sins or a test to provide a chance for spiritual growth and reward if we pass the test. This includes such things as illness or lack Parnosa. or being held captive by Hamas We just need to have bitchon. As the Chofetz Chaim explained why people should not leave Europe where they were starving and go to America - Because G-d provides the parnossa a person deserves, He can do it in Europe as well as in America

On the other hand, when it comes to the sick or poor or kollel- we are not to tell them that they should repent or have bitachon and G-d will provide. Instead, we are instructed to provide what they are lacking - even to provide luxuries to a rich man who lost his wealth. There is even an arrangement call Yissachar Zevulen - Rav Moshe says this is to provide peace of mind to learn Torah and it must be a long term relation since security for a short time doesn't eliminate worries and we are not to say to the talmid chachom to have bitachon that G-d will provide what he needs. Rav Moshe also notes that a person in Kollel should not refuse kollel payments claiming that one should not benefit from Torah study - He goes so far as to say this is the advice of Satan

So why do we need to have bitachon for our problems, but we can't tell others that they need greater bitachon or repentance?