Sorry that's a cop out. The complaint is that promo codes for a brand new, very useful integration are limited to people who statistically are less likely to use them (new users on a new platform). "We hope you continue to enjoy paying for great boot times and UX" is... not a reply worth typing, honestly.

I'm a small DigitalOcean customer. If you want the promo to be cost effective, limit it to the first 250 users or whatever. I don't think anybody here would give you a hard time about protecting the financial integrity of a program. But don't hide behind that if it's really just a way to get a few new users in the door (which is fine!) - just be honest about it.