> So whoever is writing their email is mixing these two up, but you're reading the policy itself and it is fairly clear-cut what it means for you, right?

This (rhetorical?) question seems to suggest that you have a level of understanding or have done the analysis required to come to such a meaning. It seems to me that it would be most beneficial if you simply shared that analysis.

To me, seeing this here for the first time, it is not at all obvious what the terms mean for someone seeking a donation, because of the past behavioral detail of WireGuard going through something similar. The terms you quote seem to me to state that since there is a tax exempt donation involved, the prohibition on routing to a non-Google Play billing workflow should not be in effect.