It is possible that they were being conservative because they were afraid of degradation of batteries. Over time, with more data coming in, perhaps they decide

It is possible that they were being conservative because they were afraid of degradation of batteries. Over time, with more data coming in, perhaps they decided that it wasn't necessary. It's not really such a surprise that the limit all of those things -- I think that's necessary for the correct operation of the vehicle. It's just a matter of where you put that limit and why.