I think the concept of maximum acceleration altitude needs to be understood. I believe it’s to ensure that the 10min limitation of take-off thrust is not exceeded should a failure occurs at V1. The time is the limit while the altitude is one way of ensureing the time limit is not exceeded.
So if you have a failure at 1500’ and the maximum EO acceleration altitude is 2400’, then I don’t see any problem with accelerating above 2400’ providing the 10min at take-off thrust is not exceeded.
We previously used paper take off performance chart which included a max EO acceleration altitude. However we now use Flysmart EFB software and haven’t seen any indication of maximum EO acceleration altitude within this data.