The biggest issue with Dave Ramsey is his investing advice. He recommends investing in mutual funds that are actively managed and to judge a fund based on past performance [0].
I don't agree with Dave Ramsey's investing advice but I 100% agree with his getting out of debt advice. In 2014, I landing a job paying $80,000 a year. At the time I had $30,000 in student loans. I followed Dave Ramsey's advice; I threw nearly all my income at my debt, anywhere from $3000-$3500 a month. It took my a year to finish paying it off. Half way through the process, I had to take a break for two months to replace my car (I got a used Prius for $7000). Through it all what kept me going was listening to his radio program.
Debt it dumb, cash is king.
[0] https://www.daveramsey.com/blog/how-to-choose-the-right-mutu...