It's because we have been here long enough. It's not about whether the next update will be a failure or not. It's about that X1 broke many aspects of VS700c, and X1d (!) fixed many of them. Now we got the very same thing with the release of X2. Yes, the upcoming update will fix many or most of them, while maybe 1 or 2 small improvements (aka feature requests) are added.
Some people can't accept that the 4K flagship is an afterthought, and probably always will be. They're not keen on going through the same experience with X3. That's why they are looking for other options.
We could also wait for X3b to make our very final verdict ...
It's not too late yet. But you can't blame anyone in here for being upset.