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Agreed. You may want to see another comment I've made where I would be ok if they can explain the delay with a valid reason for it - personal reasons/infrastructure issues/unexpected complexity.

The basic point you are making is that if there are unplanned/under-planned developments, we need to account for them in a way that's humane, rather than forcing the developer to hold on to an arbitrarily identified date. I am all for it, but in my case, I am not getting any good reason for the delay, just a note that things are delayed.