> I'm not aware that the WHO ever claimed simultaneously contradictory things.

Whether they did or not is almost irrelevant: information doesn't reach humans instantaneously, it takes time to propagate through channels with varying latency, it gets amplified/muted depending on media bias, people generally have things going on in life other than staying glued to new sources, etc.

If you take a cross sample you're guaranteed to observe contradictory "parallel" information even if the source is serially consistent.