I think they must qualify for an audit as the whole deliciously Ella group of companies added together exceeds those thresholds - they must have like 10 companies in the group.
Also - as someone who’s worked in audit, it could be considered a breach to advertise something like that. Exposing the fact that there are auditors in right now on a platform to over 1 mil followers. Very unprofessional. The audit should be kept professional, confidential, and by the book.
I feel second hand embarrassment for that Instagram story.