I hope covering all of this isn’t a serious expectation, should probably reword if it’s not
For example, our last hire knew Haskell/Python/TS/React well, and got into C++ in our project.
And of course the list helps people decide if they would enjoy working with our stack.
so i don't think this is such a crazy list; their stack is nearly all like super mainstream technology, except haskell, and haskell is hardly some unknown language
There are plenty of people who followed this sort of path:
grad school (some sort of rendering/imaging focus, especially) -> industry job implementing modern algorithms back end -> focus on web based data presentation
Along the way you learn a stack something like this.