Re: Dems preparing for loss?
Who is they and are they actually unified? You link to Elizabeth Warren's press release and article written by an unrelated reporter, both which seems to have slightly different thesis. I think it is a bit broad to say 'they' (implied Democrats) from your two examples.
Warren et al. are asking election equipment companies how they plan to protect elections while they consider financial considerations, their threat mitigation plans, etc. They are conducting oversight, which is their job.
The article, which seems to have no partisan narrative, is illuminating possible threats to the election process that the author has identified.
Finding and mitigating threats are not the same thing as a threat actually realised. There are lots of threats in our lives that remain possibilities and are not actually experienced. We buy insurance or wear seat belts, even if it is the safest car in the world(TM). We search for civilization ending meteors even though we will likely all be long dead before it happens again.
It is not a contradiction for Democrats to highlight risks to the election system but then determine an election was secure. If the election was compromised there was a certainty a flaw in the election process. But it does not follow that if an election was secure there were no threats. And this kind of thinking and lack of critical thinking is why American democracy is on the ropes