Receiving money in exchange for your labor is entirely different. You are being paid for providing a service, and no, the employer has no right to tell you what to do with money you have earned. When you beg for money, you are asking for someone else’s resources to be given to you for nothing in return. That person is therefore directly using their resources to enable…something. They have a right to know what and decide if it’s something they want to pay for. If the person giving doesn’t care, fine, but it’s the height of arrogance to think you have the right to take their money, no questions asked.
I’m glad you are so morally just and a paragon of justice that you get to be judge of who is worthy of help. We definitely need more judgmental people in this world.
Have a awful rest of your life :)