Are you referring to the press release linked in the article, because it doesn't actually say those things.
Focussing further is just about the worst thing you can do - "secure erasure of digital footprints" is there a definition of what this is anywhere? Is there anything that suggests they were doing that on voting machines? Companies absolutely have a requirement to remove customer data on request in many jurisdictions - that would absolutely be covered by that statement. You're take a very narrow statement (which, again, doesn't appear to be in the linked press release) and blowing it up to meet the definition you want it to.
Yeah, there could well be some shenanigans, but as you say we need actual experts doing actual analysis. Spreading wild conspiracy theories does nothing to help anyone.