Those with STEM degrees have better career options than others (in terms of nearly everything: higher pay, lower unemployment and higher satisfaction with their careers).
It is true the education path for STEM is more challenging than for most careers. That is a reality that won’t change. If people are turned off by hard work, they likely wouldn’t like most STEM careers anyway. So that reality I think is fine. But the design of STEM education could be greatly improved to avoiding turning off many people who would enjoy the education and a career if the education process were better.