I agree this is misplaced. There are so many things Wikipedia can try to fix now, and so many things they could invest in for the future. Wikidata for example. Lots of these things will fail and appear to be a waste of money of course, but that's called R&D. Growing businesses usually borrow money after all while Wikipedia is firmly in credit.

So long as there's a contingency plan for donations falling, whereby all the nonessential stuff can be dropped if necessary, there's no need to worry.

tldr; prepare for the worst, expect the best.