Gerrymandering is the most benign of the tricks, and both sides play that trick. What's more concerning is we don't really have a true paper record of the votes. So many of these swing states have machines that produce digital only voting records. So how do we even know that the vote is accurate? Even if there was a paper record, most states don't even bother re-checking unless it's very close. After 2016, a lot of activism across the country has forced states to switch to a paper + digital record, which allows quick tallies, but then also paper backup and opens the door to two way verification. Unfortunately, this is not enough. There needs to be validation done after the election to confirm. But again, the worst part is that the states that really matter have been the ones least incentivized to actually switch over. So who knows? While its conspiracy thinking that Trump didn't actually win in 2024, do we really know for sure?
Everything else you mentioned also matters. I can't tell you the amount of times that the state of Georgia, suddenly out of the blue, invalidated a lot of registered voters. And if people don't check, like my friend in a minority town outside of Atlanta, they won't realize until election day. Red states are more likely to play this trick. Your conclusion is something I disagree with, though. Voters have lost so much over the last decade, and they don't fight back until it really starts to affect them personally. I think the surge that we might see this election is only due to economics. If the economics were good, it's not out of the question that Trump would be doing fairly decent this election cycle. This is why Iran is playing things very well to try to enact maximum economic pain in the days before the election. But it's all about economics, and that shows you that people truly don't really care.