It's about using the right tool for the right job. GPT-4 is an incredibly versatile generalist tool and a fantastic jack of all trades. However, this comes with some drawbacks. While saying it 'sucks' might be an exaggeration, I generally concur with the point you're making.
It's no exaggeration that it sucks for certain use cases where you would expect and can achieve near-realtime response, and that's fine because it's not built for that use case. I'm responding to someone saying it's always best if you can afford it