What sticks with me, however, is how the story gave the player freedom while still remaining engaging (exactly the points the article makes). So-called computer RPGs focused on the most boring parts of role-playing---combat---and completely ignored the thing that makes RPGs what they are, the player's role in creating the story! Bards Tale and Wizardry games that are contemporaneous to Quest for Glory are decidedly weaker sauce. Games like Ultima that tried to create an open world mostly ended up filling that world with bland variations on the same theme, and lost any narrative drive through endless side quests. Although we ground like only kids with nothing better to do can, there was no need for excessive grinding in Quest for Glory. You could push the story forward fairly quickly, and every puzzle had multiple solutions.
Totally agreed with 32bitkid that Deus Ex is the closest contemporary game to Quest for Glory, combining strong narrative with player freedom.