Should I get a reverse mortgage to utilize equity to invest?

[Rosston Smith]

The person I know is 76, he has $300k of equity in his property and wants to stop working. 

My thought process is if he gets a reverse mortgage lump sum, he can invest that money into cash flowing multifamily, and can live off of the cash flow and when he dies the investment can be used/sold to pay off the reverse mortgage.

What are your thoughts on this? I'm searching for the best way to utilize his equity so he can stop working.