@Dan Riley
it has to do with what David Greene calls "the velocity of money." if you put your 70K (or most of it) into a turn-key, high quality, cash-flowing rental that doesn't need any work, and you net that $100-300 a month, that's fine. but now your principal is "stuck," in that you have to sell or refinance to get access to it, and if you want to buy another one, you probably have to just save up another lump sum of money to pay for the down payment and closing costs.
now, if you compare this hypothetical turn-key investment to a savings account, you are getting the additional benefits of real estate if you buy the property - principal paydown, potential tax benefits from depreciation, potential appreciation over time, etc. but again, there is risk too - large capex bills that you didn't see coming, issues with tenants, a change to the market you invested in. did i mention risk? it's about risk. savings accounts are very low risk, but with very low upside, and no benefits other than their stability.
back to the velocity of money - I (and others in this thread, I think) are looking for ways to invest that increases the velocity of money (like the BRRRR method.) if you BRRRR correctly, your initial capital comes back to you (although not immediately.)
my concern / point with the BRRRR method was just how hands-on I think you need to be in order to 1. be successful and 2. maximize your returns - i'm looking for deals through multiple channels, meeting sellers directly in person, calling dozens of contractors to get 2 bids, etc. if there's a low-risk way to do that remotely, great. i've just found that the highest return is found via being the most hands-on.