"I haven't seen anything controversial in the news"
It's literally on every page of the news.
The Trump campaign is trying to discredit the results of the election by any means possible.
The issue of 'electronic voting' is only a concern were there to be an election among regular people, interested in determining the actual truth.
It's much worse when people in positions of power just make up the truth 'because they can'.
Whatever Trump says, evidence or not, maybe 20% of the US population will believe.
If he Tweets it, it's 'true'.
This is why we're really concerned about information propagation - now the vast majority of people will 'believe' what's on the news because it's the job of journos to determine the truth - we don't have time as individuals to hunt down every little irregularity. That's why integrity in the media system is really important.
Social Media has no institutional integrity whatsoever - and there's absolutely no amount of 'evidence' that will convince certain people against what their 'Dear Leader' said.
Any random person can start a meme, and that meme becomes 'truth'.
'The Stolen Election' meme is a populist ploy, not one based on any real evidence of systematic problems, it's a fabricated narrative.
'Both sides' are guilty of a lot of bad narrative-making but this one is particularly pernicious.