fascinating and thank you for bringing it up.
On another hand is noting unusual as urban landscapes tend to be constantly evolving. My first visit in Boyztown was in Nov 2013 and it did not change since then other than different occupants in some places though.
For me both links worked.
as for sign, since it's in the open , subject to elements , rust, paint peeling off , venues being opened and closed , not unusual there was need to change it periodically.