This is the right thing to do, it doesn't make sense to pay so much to a company that works against you. Anthropic may have arguably the best models now, but they don't have the best models for the value of the money. There are different setups that cost less and achieve the same
I've been a Claude Max user for well over a year now (personal account, not work). I didn't love limiting subscriptions to their harness, but understood and accepted that. If they are now going to lock out their best models to API only, and then also nerf said models, I'm out.