I mean I get the reasoning to see it as a downside but "It runs on AA batteries" is a feature! Built-in batteries degrade over time and when it's built-in it's

I mean I get the reasoning to see it as a downside but "It runs on AA batteries" is a feature! Built-in batteries degrade over time and when it's built-in it's usually not possible to switch it out easily by yourself. It's not a problem for this particular problem, I assume it's fairly trivial to replace it but consumer goods companies tend to not care about that at all.