None of that. They are trying to neutralize Trump’s success in getting a covid-19 vaccine to market so fast. They are essentially saying they would insist upon 100 days not a year to get such a vaccine ready. Just more talk.
I think you’re right, on both points.
With all of the recent advances in gene sequencing, etc., it’s probably quite feasible to develop a new vaccine in 100 days. Especially, given the way Trump cleared away red tape, and brought private-sector project management practices to bear on the problem (Project Warp Speed).
However, the testing still takes the most time. The only way to speed it up more, is to use volunteers willing to be infected, to test the vaccine. As the untested vaccine could be ineffective, or deadly — the volunteers would be facing a huge risk. On average, following the protocols set by the US FDA, it takes 12 years of testing, before a new drug is approved. That’s 12 years on top of the time it already took to develop the drug.