I think most of these claims are proven false or factually misleading (the software switching, etc). There was one last week from a woman claiming her vote was switched showing a voting stub. The supposed stub (and others shown like it) clearly showed a vote for someone she said she didn't vote for.
And then the company later who was attributed to the error came out publicly and said flatly that while each vote created a unique record, none of their stubs had any unencrypted information on them (as in, the story was false from the start because reading any of the vote stubs isn't possible without having the database to unencrypt what they display).
There is nothing compelling enough for a court to take on, or filed by someone with standing to even make the filing, which is a pretty strong indication that there's nothing substantive.
When it came to talking about the "fraud" here locally, there was an accusation that some thousandths of illegitimate votes were going to be counted, but the judgement decisions are based on what the election committee decides - e.g., mail in votes signed in the wrong place, etc, that indicated a clear choice. To the side wanting the vote, it because something unfairly complicated that anyone (especially a senior) could screw up, and to the person wanting to disallow the vote, it just becomes a summarized comment "they allowed ___ illegitimate votes".
The summary without the background gets forwarded leaving someone to imagine all kinds of fraud when granny frau in the 26th ward clearly wanted to vote for candidate X and any reasonable person would look at the ballot and not be confused with intention.
In the case here locally, when each type of situation was considered, *all* votes that met the voter mistake classification were counted, not just one side or another.
