Do you have sources for this ?
Australia, WA, border pass data: https://www.abc.net.au/news/2021-06-17/g2g-app-data-accessed...
Australia, VIC, check-in data: https://www.theage.com.au/politics/victoria/police-sought-ac...
Australia, QLD, check-in data: https://www.abc.net.au/news/2021-06-29/queensland-coronaviru...
In Germany police requested contact tracing lists from restaurants in investigations.
And the underlying desire for having this information will no doubt prolong the Corona restrictions longer than necessary, which is certainly not in the interest of German citizens.
Oh dear, one thing we could definitely state that German government is absolutely could be trusted to do the right thing