Why do you assume that a Job Guarantee would mean the creation of "dig a hole, fill it back in" jobs? Out in the real world, there is a wealth of useful things

Why do you assume that a Job Guarantee would mean the creation of "dig a hole, fill it back in" jobs? Out in the real world, there is a wealth of useful things that could be done, especially at the local level but also in non-profits, but that are currently not being done because of a "lack of money". Just put one and one together.