You can lead a horse to water but you can’t make him drink
You can provide a kid a job but you can’t make him work
It’s economically impossible that these summer-wage jobs can only be filled by flying foreigners here and housing them.
Well, if some parental "tough love" were to be used, and free-ride options eliminated, then perhaps finding work might suddenly be a viable option.
As an aside, lazy millennial snowflakes might discover some feeling of accomplishment, self-respect, and some new life goals.
I say "No thanks" to more job-robbing visas.