The simple answer is that collecting personal data while being located in the US means that you can't guarantee that you will respect European law.

> There are zero plans to collect anything that is not needed

Unfortunately, it's not up for you to decide. The US has laws that makes it legal for your government to harvest data, and it has used these laws against EU citizen in the past. The US has also asked US services to collect data they were not previously collecting, with a gag order to prevent customers from learning it.