Punishing companies for using stigma in the business would set a new precedent indeed. Consider industries like clothing, jewelry, cars, beverages, cosmetics, etc which also use stigma. Selling perfumes and cologne is all about stigma as is that Rolex watch.
This isn't solely about green/blue bubbles.
Apple claims you have to do everything the Apple way because of security.
Apple claims the best choices for them is based on security.
Yet choosing to send messages to android completely unencrypted - with the option to use RCS on the table for years - is plain flat out hypocrisy.
It's not based upon stigma, it's based upon practical choice. The theme and thread here is that SMS messaging is fundamentally tied to iMessages and coupled, IOS users can't decouple it and Apple chooses the worst and most unsecure process for using it, while at the same time touting the need to do things the Apple way based upon security and thinking on behalf of the end user.
Additionally, that's only one of the many reasons, but the same basic thread is there amongst the other reason. Can't use another payment system? Security. Can't use web apps? Security. Seems like a convenient umbrella, not a real and practical one, considering that this isn't the same even within the Apple ecosystem.