Our lack of understanding is a mix of lack of data, and lack of intelligence applied to data in order to parse it appropriately. Let's remember for a moment AlphaFold, that solved a problem considered by some even theoretically intractable. One year before we were convinced we were far off from a solution, the year after it was solved.
We have huge amounts of data about human body, at the scale at which it works (~proteins), it's at least reasonable to think that the bottleneck is not data, but intelligence. If it's data, a super intelligence can develop better instruments to collect data at a faster rate and precision. Consider the historical cost for DNA sequencing. Faster rate of improvements even compared to the Moore's Law of the golden days.
Do we have a guarantee that in the next 10 years we'll be able to crack all those problems and have a cure to all diseases? no. Is it unreasonable to think we will? I'd argue it's not. It's for sure not "mental derangement".
Do I personally think we will crack all those? Well, no, because I think AI will kill us all and just focus on its own goals. But under the hypothesis that we align it, yes.
It would be a sign of some kind of mental derangement… so likely it’s cynical hyping beyond all realistic prospects.