But economically, they have an effect similar, in many respects, to a prohibited direct monetary financing of governments by means of the printing press. If that is supposed to be unproblematic, do you then find the whole prohibition redundant? This prohibition might be less important if we had a fiscal union with a common fiscal policy.
But as long as that is not the case, the ECB must be prevented from being dominated by the ministers of finance. That is why we need this Treaty article, to protect the independence of the central bank. Will it necessarily come to this fiscal union sooner or later? Of course, a fiscal union would make life easier for us as a central bank.