The election infrastructure for much of the country has the security of swiss cheese. And this isn't some new thing created from whole cloth by Trump supporters; people have been raising concern about this for years. Back when Obama was up for election, there were news articles about how election machines could potentially be tampered with to steal the election from Obama. When it was Trump vs Hillary, some were concerned the election would be stolen from Hillary, and when Trump was elected, insinuations and outright accusations were levied that Trump stole the election through, amongst other things, election machine tampering. And then in this most recent election cycle, we have the "Kraken", et. al., which appears to have, in-part, motivated the Capitol riot.
Regardless of what you think of the of the truth of the accusations, whether in this election cycle, prior ones, or future ones, the fact that the underlying (lack-of) security lends a plausibility to such accusations is a problem unto itself. If elections have or are tampered with by malicious agents, foreign or domestic, we do not have free and fair elections, and that's a Big Problem. If demagogues can easily stir up popular sentiment that the elections are not free and fair, that's also a Big Problem. It is the lack of election security that amplifies those problems into big ones.
Sure, we can go after entities that try to tamper with elections, and we would do well educate ourselves to be able to spot demagoguery and misinformation. But we would also do quite well to go after underlying problems that make the aforementioned problems worse.