Welfare and universal basic income are quite different. Welfare has the condition of keeping your income low and punishing you for raising it by kicking you off welfare. goes to everyone regardless of income. No one with UBI is punished for increasing their income by removing their UBI.
UBI is a permanent floor below which no one can fall and everyone can build upon to rise as high as they can.
Welfare, by being targeted, however well intentioned that is, can function as a ceiling.