Seeing as both RB and Ferrari pushed for this TD to be delayed till Belgium GP i think both have been exploiting it. Whether RB need a new floor is a different matter. Whether RB still have the development budget left for a new floor is again another matter.
There is no confirmation of that though.
Also it would usually take much more than
teams to push a TD out so you can be sure much more than just two teams!
It's like the extra money for inflation. Everyone was giving about about Horner wanting it yet in the end 9/10 teams wanted it.
I'm sure you'll find that a similar case is happening now!