Is your sentence supposed to be analogous? The difference between a great lead and a bad lead in that context would be sending a patient with a skin lesion to a dermatologist (great lead - “someone who will be happy with what I can do”) vs sending a patient with a brain tumor to a dermatologist (bad lead - “I can’t help this person”). In this context, a “great lead” is someone who has been appropriately prequalified so that both participants are going to benefit from the interaction.
Naturally the grievance writing style pre-supposes extractive malice “oh the dermatologist is happy because they’re going to make money off me” rather than the more mundane “oh the dermatologist is happy because they don’t have to spend this time telling me they can’t help me”.
In any case, far be it from me to tell you not to do this. As a content creator, you have certainly found writer-audience fit. It baffles me why, but this style is certainly popular on this website.
I think we disagree on the connotation of the word "lead."
To me, if someone describes me as a "lead," it implies that they are focused on making the sale rather than on anything else about the business relationship. I would also find it unsettling if a doctor told me that I was a "good lead" because I had a disease they treat.