Brushes may be used in painting letters onto a sign, but only as a tool to fill an area, whereby brush marks are regarded as artifacts to be avoided.
The font doesn't look quirky to someone whose native writing system's canonical form is rooted brush strokes.
Basically this remark in the article nails it:
> This could have to do with what Choc evokes. For some it bears a resemblance to the calligraphic forms of Asian writing systems.
But then:
> However, it’s disputed as to whether Choc was a direct homage to these styles. According to Ms. Chamaret, José Mendoza, Excoffon’s assistant at the time of Choc’s production, said that the letterforms were drawn in outlines. “Never with a brush!” she said.
That hardly counts as an effective dispute. Obviously, the font painstakingly captures the appearance of brush strokes in exactly the same manner that Asian fontographers do in certain fonts. They also don't use brushes, but rather vector graphics: precisely specified outlines or strokes.
Choc is undeniably Asian influenced. Look at the C in Choc; it starts with a little right tick and then reverses. The roman letter C doesn't have anything like that; this is reminiscent of the top stroke in the Japanese こ (ko).