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Not knowing what’s going on is definitely an issue for dial-up users.
But even those of us on a speedy internet connection like to know what’s going on, and some indication that all that mad drive, router, fans, activity is indeed Avast’s and not by some undetected trojan transfering all my data out 
As far as the 1-2 emergency updates in a day - that’s not an issue for me, though might be for others, as DavidR mentioned. Since these update files have different names (or I told it to ask, I don’t recall), my firewall sees something new and asks so I know what’s going on on that front.