It's more an objection to the typical "personal freedom" argument you get from car drivers who balk at the idea of speed limiters. There is no road in North America with a speed limit of 160kph, so a hard limit of that value is meaningless. I'd be open to a dynamic speed limiter that was context-aware though: we already see that cars have the capability of knowing the current speed limit and chiming to let the driver know they're busting the limit. There's no reason why the limit shouldn't be enforced there in the same way that e-bikes have a fixed limit... even when they're forced to share a road with cars that do not obey the limit.

I accept your argument that bikes aren't insured or licensed, and that this can be used as an excuse to limit their capabilities, but as one of the law-abiding e-bike riders who's been tailgated, close-passed and nearly run off the road by more than a few angry drivers, I can assure you that e-bikes are not the problem when it comes to safety. 2-tonnes of steel and glass being driven by (licensed, insured) absolute maniacs is the real threat.