It’s the least of “their” problems.
Why do you find this to be a problem at all?
Do people really think that the building itself has intrinsic kedushah in it so it can appear on such a holy aretefact such as a tefilin bag?
A. One could argue that the building has the same kedusha as any other shul/yeshiva.
B. What makes the building of 770 any worse than any of the other designs (flowers, plants, animals, abstract designs) that I’ve seen on tallis/tefillin bags? They don’t have any intrinsic kedusha either and yet no one has a problem with them.
The Wolf