No one is saying KH construction has been stopped. We have recently seen the completion of the Chemsfold KH for example. However, as someone still nominally on the re-badged RBC/LDC I know there is very little more really going on. RBC groups had regular full build projects every 2-3 months. There have been virtually none in the whole of the UK for well over a year now.
There is lots of talk about how many more projects there are required. Firstly this includes maintenance tasks that fall under the LDC now. Secondly, when you actually talk to people, no one actually sees anything happening. Things are always supposedly happening elsewhere.
I can't speak for third world areas and accept there could be more going on there than we assume might be happening but the talk at the hall, assemblies and conventions is not about the third world, it's constantly bigging up the local LDC workload yet there is nothing of real substance actually happening.
Also, I believe there was a thread on here debunking the implied timelines on third world hall projects presented in a recent JW broadcast.