Which is why the actual announcement of the investigation is titled "Commission opens in-depth investigation into the proposed acquisition of Fitbit by Google" [0] written a month before.

The title you are commenting about is written by the CEPR, an institution independent of the EU, which supports that opinion with their own arguments. This should not be confused with the Commission's investigation.

[0]: https://ec.europa.eu/commission/presscorner/detail/en/ip_20_...