You seem to be saying not only that you do not want to be paid, but that anyone accepting any money for working on Brython is totally barred from contributing to the project. Do you even mean, for instance, that if someone is a salaried developer and their employer agrees to let them spend 10% of their work hours on Brython, you would not accept their contributions? Can you explain why you are taking such an extreme position?
People get paid to work on all kinds of open source projects --- Linux, Pandas, even Python itself --- without compromising the open and free nature of those projects. I'm very appreciative of all the (free) work that you and others are doing on Brython, but I fear that adopting such an extreme stance against any form of payment may actually be harmful to the health of Brython in the long term, not because we risk missing out on new developers who want payment, but because we risk cutting off existing developers if someone decides they want to pay them for the work they're already doing for free.