Hi @Craig Hormes, I think @Steve Rozenberg hit the nail on the head in a recent episode of the Real Estate Rookie podcast. Steve's point was essentially: Section 8 rentals can be an excellent strategy IF this is part of a holistic, well-thought-out business plan. If it's simply something you turn to when you need higher rents or can't get other tenants, then you can get really yourself into trouble.
@Joseph Asamoah is very successful with this strategy because he has a product with high demand and low supply (high-end, renovated single family houses in prime neighborhoods with 4-5 bedrooms), has put together a very thorough tenant screening process, and has developed deep relationships with key players at the local housing authority. In my opinion the more you can do those 3 things, the higher your chance of success in this area. (I rent to a voucher holder family in my house hack in Washington DC).
Here is the podcast episode I referred to above, which also features Joe: https://www.biggerpockets.com/blog/rookie-podcast-03coronavirus-crashdos-donts-recession-veterans-joe-asamoah-steve-rozenberg