Yes of course theory and a large amount of empirical research say that in the long run more money will bring about higher prices. The operative term there is "the long run". It can be shown, that pushing the system monetarily or fiscally can activate the economy in the short term, however. That is where Bob lives and telling him that in the long run we probably will get inflation so that he cannot have a job now in the short run is tough.
It is also difficult, as we do not know, whether subsequently reduced fiscal or monetary activity will eliminate the risk of inflation without recession. We think so, but I admit, I have not seen very robust research on that question.
And yes. It is justified in my opinion to stop systemic collapse, while pursuing welfare optimization in education.