Yes. Fortunately, local strida dealer agreed to fix this under warranty.
This is a stock wheel of strida 5.2 (I bought it this summer). And I did not do anything special. Actually, I’ve noticed it accidentally 
Yeah, 18" wheels should be better. I was thinking of buliding them from the beginning. Now it’s time to set to work, I guess =)
Afaik, those wheel are even less durable (judjing by the maximum allowed tyre pressure). Plus they are not repairable (not more spokes to replace =)).
I think regular spoked wheels are ok if they are correctly built (tensioned, stress-releived, etc…) and free from factory defects (this is my case I guess).