I'll preface this by saying I expect to get downvoted all to hell, but: if these jobs are so bad and so underpaid, why are people doing them in a period of what is reported to be incredible labor market tightness?
If labor conditions are not as good as they're advertised, then isn't the expected outcome here that more people will try to find delivery jobs, resulting in more workers chasing fewer deliveries (assuming prices go up)?