I can't speak for Larian, but I can say that Early Release is just not good for me. Game crashing bugs are even more more frustrating than losing your golf ball in the weeds, and in the case of computer games, you don't have the option of pulling out another ball. I don't like multiple 60GB patch downloads, either, because something always interrupts the download and I am never sure if it will actually make it all the way.
Imagine buying an Early Release automobile, where initially you get a chassis with an engine, wheels, partial transmission, and driver controls. But the transmission has only two gears so the car will go only 30 mph (48.28 km/hr), and otherwise it has no radio, A/C, headlights, cup holder, back seats, doors, windows, hood, or exhaust system. You'll get those missing things in three years ... maybe.
So Early Release is not for me. But, I do like the idea of community feedback early in the development, which I believe was a huge factor in the success of Baldur's Gate. D&D has always been a community thing, and the old BG series picked up on that same spirit. I am very glad Larian has these forums, and I am glad they are using the Early Release to improve the release-version of the game.