Technological advance is not the point here
There are two reasons why this is happening, and neither of them has anything to do with space exploration, technological advances, whatever.
1. Donny wants to be able to say "I Made America Great Again by landing on the moon!" (with intermediate stage claims as required by elections, natch...);
2. Donny wants to spend large amounts of taxpayers' money creating jobs (see above). Moon shots are as good as anything for this.