To be honest, one can complain that it seems that award availability is down from what is used to be , but to complain not to get a seat in C to YVR or IAH is really not worth it.IAH has always the prime northatlantic flight for KLM and not surprisingly they launch an all C class flight in autumn.
YVR in August is peak cruise season and peak holiday season in Europe and in addition to that not really served well by SKY at all...
It makes sense to complain about several new FB enhancements, but not about some destinations not available during super high season...