nobody would scream circular financing because of this.

Majority would actually. See comments to my post.

  this however does scream "manufactured demand" - if the terms of your financing dictates that the money is used to purchase your own product.

This is nothing new. Intel Capital has invested $20b over its lifetime to boost Foundry and x86 ecosystem.

Salesforce Ventures has invested $7b in more than 700 companies to boost its ecosystem.

I didn't see people calling this manufactured demand or circular financing.