Ok let's establish some Vaishnava epistemology: Kirtan is a sacrifice of one’s time and energy that is meant only for the pleasure of Krishna. Ideally, the motivation to do kirtan should be purely for the pleasure of Guru and Krishna, but we all have material desires and false egos too, I get it. However one should not knowingly exploit Krishna, whether in the form of His Names, Deity, etc. For example in India, we find caste “goswamis” making a living by showing the Deities installed in their family temple and taking payment for darshan in the form of donations from pilgrims. Thus the temple becomes their personal storefront and the Deities are like zoo animals that they show off to the public for a fee (Krishna forgive me for even repeating such an offensive thing). These “caste goswamis” may be devotees, however, we can presume by their grossly exploitive attitude toward Krishna that they are neophyte devotees, or “mundane religionists” as Srila Prabhupada called these types of people.