There have been even more serious claims by The Election Truth Alliance and SMART, that they fucked with the tabulator machines to tip the election to Trump. It's definitely a huge allegation, but they have some lawsuits in PA now so we'll see what happens.
The thing is, I fully believe Trump and Musk would do anything in their power to stay out of prison, and Trump has a history of cheating and lying. The means are there, the motive is there, and the opportunity is there, but let's see how severe and credible the evidence is.