It is not a circular argument to show that a statement is not correct: ECB never said there is no inflation in the first place. ~2% is not "no inflation"; 2% is the target that the ECB aims at.

In addition to that, I added an explanation why such a number seems lower that you could expect.

Please note that ECB does not define the HICP, the European Commission does it: https://ec.europa.eu/eurostat/web/hicp/faq