Who knows what "not very often" means. It could mean once a day or once a year. The point is that this could be made to be compliant with little extra effort, so pointing out "um actually it's not compliant" is not saying much.

I work for a company managing a team that has built this for GDPR compliance.

Customer submits a deletion request. We have a fan out process that takes the deletion request and submits it to a bunch of different data locations. All of these must respond within 2 days (though the required time is 72h). Each of those data locations will queue up a job to remove access (soft delete) the data, and schedule a hard delete for 28 days in the future. If the customer says they don't actually want the data to be deleted, we cancel the data hard deletion and revert the soft delete. If nothing happens the hard deletion goes through.