Many people seem to have this ideal that UBI is inevitable and will solve a bunch of these sort of problems. But I don't see how UBI can avoid the same complex

Many people seem to have this ideal that UBI is inevitable and will solve a bunch of these sort of problems. But I don't see how UBI can avoid the same complexities as our tax systems, where it will be used to try to influence behaviors, growing cruft along the way just like taxes.