No shot at all apple batteries can last 1000 cycles and remain above 80% capacity. Probably can’t even do 300 in my experience. Sounds like an easy lawsuit.
No doubt they will redefine maximum battery capacity to a figure that does achieve 80% over 1000 cycles. If you under-declare maximum capacity then there is a lot of headroom for actual degradation before you start to show degradation to the user.
A battery that can support 1000 cycles and remain above 80% capacity would be a literal brick. For an example the Vision Pro's battery has extreme over-provisioning and limit how long it would last. (note I know it is removable but that isn't the point).
