What's the agenda?

I've noticed vested interests such as Domain have now started talking down the market. Exhibit A: Doc Wilson keeps talking down the market big time. "Plunges" from 71% the week before to 70%?? That's a bit extreme. I noticed Chris Joye in Fin Review called this out and said the market is still booming and he thinks it will continue to do so while the RBA holds rates so low.

That brings me to the question? Why are e.g. Domain talking the housing market down after usually doing the opposite? I think they must be scared of reform (e.g. capital gains/negative gearng/foreign ownership) so are trying to make out like the market is sinking on its own accord.