Yea your math doesn't math.
Try it before you go super far into the world of this "must suck".
Most people aren't going full vibe code. If you stear these models, they are almost identical. Seriously. The major score changes in a lot of the absolute latest models are just models doing more things (often when they shouldn't). Having a slightly lower scoring model is actually better in some ways. I digress.
If your model can make a production mistake you are using it wrong. Sorry not sorry.
There are other benefits. Your data is private, it's not sold. Your privacy is kept, that's priceless. No one can degrade your workflows. Uptime is you are online whenever you are online not 3 9s. You also won't get refused asking basic security questions.
Your math doesn't math for a lot of people. It might for you, but I would encourage you to think a little more.