I’m sorry that you ran into this @FBFATA1020, and thank you for sharing your specific resolution steps in your original post as well!
It does look like the issue is specific to Duplicator users and then those who are using the DAF format for large sites or setting to this format to be their default. Checking around the forums however, it looks like the only previous DAF issues I can find mentioned were 3-5 years ago, but we haven’t seen anything come up regularly since then.
Are you seeing any other recent topics regarding DAF specifically? The one you linked in your other post was just a generic database import error but I don’t see mention of Duplicator or DAF.
Several years ago, we used to recommend Duplicator, which may have contributed to some of the older posts regarding this problem. I can understand your headache here was a bit unique since you were working with an older export file and no longer had access to the site. For those who still have site access they should be able to change their format or use an alternative method such as WP Migrate Lite. Or if they have a managed host, they might even be able to manually create and download a backup through their interface.
We will monitor this request however for interest from the community and consideration for changes in a future release.