Fixed costs are a component of operating costs. I'm an engineer (at least by education) so I might have these terms slightly wrong, but I think the correct way

Fixed costs are a component of operating costs. I'm an engineer (at least by education) so I might have these terms slightly wrong, but I think the correct way to say this is that EVs have higher fixed costs and lower variable costs - and both of those are part of operating costs. FWIW, I'm not representing this as a full analysis, just pointing out that "EVs are cheaper to operate when driven by someone as a daily driver" doesn't necessarily mean "EVs are cheaper to operate as an Uber vehicle".