Answer:
This answer is based on opinion, so I wrote as if I agree that there should be muckrakers.
I believe muckrakers are still needed today. Historically, muckrakers created public awareness of corruption, social injustices and abuses of power. The in depth encounter would bring national awareness to these issues, and would often bring change. Although modern work environments follow stricter guidelines, no system is perfect, and injustices still occur. I believe the presence of Muckrakers in would affect todays society similarly to they way they historically affected society, by leading to public outrage at hostile work experiences, and thus resulting in fairer work environments.