For unknown reasons, the management cluster AWS endpoint service sometimes has an active connection leftover. This blocks the uninstallation, as the AWS endpoint service cannot be deleted before this connection is rejected.

4.12.z,4.13.z,4.14.z

Irregular

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AWSEndpointService cannot be deleted by the hypershift operator, the uninstallation is stuck

There are no leftover active AWSEndpoint connections when deleting the AWSEndpointService and it can be deleted properly.

OR

Hypershift operator rejects active endpoint connections when trying to delete AWSEndpointServices from the management cluster aws account

Added mustgathers in comment.