I assume Shopify’s position there is that the email address provided with the app is probably visible to end users somewhere and could cause confusion. The policy itself seems reasonable enough just shitty enforcement.
Based on their difficulty articulating the actual issue, I'm pretty confident that this wasn't intentional. Probably someone in a body shop following a checklist.
The specific box is labeled:
2. App submission contact email
This is the email we will use to communicate
with you during the app submission review process.
There are separate boxes for support email, review notification email, etc. So I think the reviewer was simply confused.
Not sure in this case and it's definitely possible, but usually you have an email used for the account and interacting with Shopify, and then a public facing one used for customer support.
