What is the main danger of applying to 50-plus jobs daily, according to advice on organizing the job search?

It is often less effective than taking a more measured, strategic approach

The advice strongly cautions against the trap of aimless application submission, specifically noting that applying to an excessive number of jobs, such as 50 or more daily, is frequently less effective than employing a more measured and strategic approach. Effectiveness in the job search is tied to quality and customization, not sheer volume. Instead of mass submission, the text advocates for tracking every application using tools like spreadsheets or dedicated apps such as Huntr or Teal, ensuring that effort is consistently directed and monitored rather than simply spread too thin across numerous unrelated opportunities.