if I recall correctly, direct donations are not subject to income tax on the donee’s part, which makes it even cheaper for the donors.
At least on Patreon (which you seem to be suggesting that people use) you probably have to pay tax if you make over $600 per year. See their FAQ on taxes:
If you are a US creator, and you make over $600 a year, you’ll need to complete a W9 and we will send you a 1099.
[...]
In most jurisdictions, the money you receive from your patrons is taxable income.
At least on Patreon (which you seem to be suggesting that people use) you probably have to pay tax if you make over $600 per year. See their FAQ on taxes: