The point of the clock never was to be accurate. It was a presentation device, used to indicate that the news was about to start...
Precisely. This reflects what I have said about the function of the clock - and as a 'news indicator' it was much better suited to the task than a symbol - but there is clearly some debate about how important the accuracy is... I don't feel it is an issue personally, but then I wouldn't complain about a slight delay in the timing.
It has been said that people may take issue if the time is incorrect, and I can understand that as a reason for not broadcasting one so as not to incur those complaints
if
there would be many - but your information puts a different and interesting perspective on things, insofar as inaccurate clocks have already been used in the past... So I'm not convinced the accuracy question is reason enough to stop a clock being re-introduced, particularly as that would not be its primary function, as we have said.
If delayed clocks have quite happily been broadcast before, then why not now? There doesn't seem to have been much mention of their being considered slow or old-fashioned prior to just now, but I very much find that easier to understand as the reason for not being shown at present, even if I wholeheartedly disagree with it!