Sun Street and The Flying Horse

Demolition and reconstruction. Will it never end?And this I saw it coming for years....Sun Street runs behind the Broadgate complex just north of near Liverpool Street. Since early 2009 I have been keeping an eye on this terrace.
A couple of weeks ago I took a detour and was sad, but not surprised, to find that the whole Georgian terrace has been demolished but the The Flying Horse, a Victorian era public house, remains in business on the corner which, I assume, will soon be given scrub-up and a homogenised makeover as per the Three Crowns just north of Old Street Roundabout which, too, has been saved like a little historic jewel embedded into a modern glass bock.Could someone please explain to me the logic and rationale here?
I am not suggesting we keep everything but jeez, this area is fast becoming as glassy as the Isle of Dogs or Nine Elms. I think, this leaves only Worship Street and Leonard Street with any pre-1880 buildings.

Flying Horse, Sun Street, March 2009

Flying Horse, Sun Street, June 2018

Sun Street, Georgian terrace, March 2009

Sun Street, March 2009