Right, but I don't think we should glamorize old-style paper voting either. Yes, it is easier for an observer to spot that something fishy is going on, but it is also easy for authorities to dismiss it as insubstantial. Someone obstructed your view of the ballot box for a few seconds? Sorry, that was an accident. Police evicted you from the poll station? Better behave yourself next time. You saw a blatant incident of fraud and you have hard evidence? Well sure, local officials went a bit over the line, we'll cancel the results of that particular poll station. Our candidate still wins.
My impression from fraud reports from Russian elections is that most fraud occured at the local level (where no one was able to precisely quantify it) and from the point the data was inserted into the centralized database everything was squeaky clean.
So maybe some kind of a centralized panopticon surveillance system that the FAAMG are so fond of is just the right fit for elections.