BRRRR financing (Conventional vs all cash)

[Nicholas Bohm]

Most of the time when people talk about BRRRRing properties, they say that buying all cash up front is the way to go in order to buy lower and close deals faster. I'm wondering why most people don't BRRRR with conventional loans with 20% down because to me it just seems like the better route to take because you can put less money in deals and still cash out refinance all your money, right?