I do like that, WGR but it is geared for heroquest, with its intrinsic flags (traits, professions, flaws) built into the questioning process.
So as Josh suggests, cater your DW questioning to the flags the players have given you. Just dig a little deeper into their choices and remember to address the characters.
For instance, the playbook (or class) that the player chooses says an awful lot about the type of character the player wants to play, or moves that they may be interested in authoring into the story. So instead of asking the player why they chose the fighter as their avatar, address the character... So Ozruk, what made you pick up your signature warhammer and take up arms to defend your dwarfhold deep in the mountains?
The questions lurking in that character generator are gold, just don't constrain yourself to the 'format'. Disseminate, tear apart and re-incorporate, especially involving the flags that your players have identified: Classes, races, moves, spells, equipment and bonds.
Bravo!