Yeah, you should talk to someone who knows more about security than myself, but as a couple starting points;
math-proven safe AIs
This is not a thing, and likely cannot he a thing. You can’t prove an AI system isn’t malign, and work that sounds like it says this is actually doing something very different.
You can do everything you do now, even buy or rent GPUs, all of them just will be cloud math-proven safe GPUs
You can’t know that a given matrix multiplication won’t be for an AI system. It’s the same operation, so if you can buy or rent GPU time, how would it know what you are doing?
You very much do not know what you are talking about, as that linked “explanation” makes clear.
I’m not sure if you’re honestly confused, or intentionally wasting peoples time, but either way, you should spend an hour or two asking 4o to explain in detail why an expert in AI would object to this, and think about the answers.