The people who built this game were also professionals, working full time, for a period of approximately two years - yes, tools have improved, but the requirements for basic art assets have also become more complex. I suspect you are grossly underestimating just how much work is required to build a game of that scale. Just in terms of character art, we’re talking 20 or so named characters, a large number of different animals and monsters (many of whom will need not only meshes but also unique rigs and animations), and a hefty number of NPCs. It’s no small amount of work, especially part time and with limited experience.