I agree with this. You don't need to be super-wealthy as a lay man, but it helps to have sufficient money. If you're struggling to pay the rent or mortgage and to put food on the table for yourself and family, then it will be difficult (not impossible) to practice Dhamma, meditation. You might have to work 2 to 3 jobs making ends meet and then there's no time for attending programs or even practicing on your own.
Many financial advisors say it's not so much how much you make, but how much you keep. If we limit our cravings and purchases and get beyond the consumerist thinking, one can do pretty well on small income. Timber Hawkeye who wrote Buddhist Boot Camp advocates a minimalist living and abandoning consumerism and living simply. He calls his lifestyle "working part-time so I can live full-time." Here is his home in an RV:
Timber will be at my place on March 24 if anyone is nearby and wants to attend.