u/why-is-why

Came across the Gordix CNC, which is currently on Kickstarter.
I really like the belt-driven compact style, but this is also my main concern:

From the images, the belts look like rubber belts. Wouldn't they flex slightly?
How likely is an accuracy of 0.5mm for a belt-driven system?
Looking at one of the samples in the promo video, the accuracy didn't seem very good. The round shape is definitely not round (see screenshot). There is also quite a lot of chipping. However, in the youtube video, the influencer claims that all passes of the bit are perfectly flush.
Even though there is dust collection, there will always be some dust around the table. Would the belts (that are constantly moving in and out) and gears suck up all the dust and lead to inaccuracies or even failure?