I am not in the position to judge that.
But reducing spam on iMessage is beneficial for Apple customers, and as a customer, I want Apple to be able to do that.
I’m in Asia, my phone number has been with me for almost a decade. I haven’t received spam in a blue bubble, only on SMS (green). Just want to give you a perspective in the other part of the world.
This are not just spam but most are sms phishing with links. We have poor, inadequate cyber laws, so we are glad Apple is doing its part sealing this off.