My somewhat brief thoughts.
1) A change of this magnitude if found to be the correct decision or method would require a server wipe. A server wipe at this stage carries the risk of pushing away a section of players who have grown accustomed or prefer this type of economy.
2) The idea would definitely be a cool experiment to see how it actually impacts player behavior when they are unaware of the intention/comparison between economy models.
3) I think this model is best suited for a more hardcore/serious RP environment. When you look at BLRP the original intention was "accessibility and casual environment". Anyone could join the server and play no matter your RP experience or skill. You wouldn't be banned for just breaking character and the goal is to let people grow and develop those skills. Over time as people improve it creates encouragement and guides the next new person to better RP. A lot of people just want to hop on and hangout, do some jobs for money and have cars to buy. The opportunities for both player types are available and fit this type of environment better imo. Especially as newer players, it allows them to slowly blend into the fold rather than forcing them into situations when uncomfortable/new.
4) Balancing economies is tricky work ESPECIALLY when it is player driven and I think that the redditor downplaying it to "just give X per week" is silly.
Can a player driven economy work? Surely, but is it the best for the type of environment that BLRP offers? IMO no.
If a white-listed BLRP server cropped up would it be worth investigating? Probably but there is a lot of effort involved when you think of the supporting structure for businesses, jobs and the overall economy. Now you're affecting development time by splitting into 2 builds.