> His understanding of GDPR and how it affects his service will grow over time and he will likely eventually take action to reintegrate the EU into his service.
Unless you personally know the developer you are making a number of assumptions about their resources and time to deal with this issue.
The decision to exclude a portion of your user community should be explained.
Unless you personally know the developer you are making a number of assumptions about their resources and time to deal with this issue.
Presumably the developer wants to continue to offer this app and service. His understanding of GDPR and how it affects his service will grow over time and he will likely eventually take action to reintegrate the EU into his service.