I would like to point out that this sort of simplification of mining has never been (successfully) implemented and that the economics of it look sound. Not all people have the necessary skills to configure a miner and deploy it, let alone understand what mining is in the first place.

 If the devs pull this off then they would tap into the millions of potential mining resources that have been unavailable until now for the aformentioned reasons.

In other words, imagine your mom working in a -let's say- public/government institution opening up a browser tab right next to the solitaire one just to earn some money. Granted there might be some backlash from this in the far future but  it's a good start for learning about crypto.