Not developing it further? They are bound to their shortsightedly developed xlsx format and they need to make sure legacy stuff doesn't break... However, the Win11-style redesign is a regression, and the Czech spell checker has been flagging a completely normal verb class as ancient for years, and the heavily-touted Web Sources cannot even parse JSON. They also keep adding shit like Online Images (with Bing), automatic image recognition that I imagine collects shitloads of AI training data and of course support links that only open in Edge even though it works no better than your default browser. I wonder where the prosecutors who brought M$ to court for bundling IE with W95 are today.