Arguably: All European customers who bought a Fitbit are likely screwed anyways, Google has a poor history with supporting acquired product lines. While I am irritated about my data being acquired, personally, I'd also recommend against anyone buying a Fitbit while this acquisition is in flux, as Google might choose to terminate service to devices shortly post-acquisition anyways. And privacy loss is a harm as well.

In short, this acquisition is already harming everyone, and the EU is trying to prevent the most consumer harm.