Because they wrote in an announce "The Extended Stable channel has been updated to 96.0.4664.131 for Windows and Mac which will roll out over the coming days/weeks." But in real life it released never, because on the same day was released instead of it 97.0.4692.71, why? I don't know.
Look, I can't think of anything, because I don't understand many things lately, including how anyone else thinks or how his/her world at all exists. Or it all will take a very long time to try to think in a way that someone else may think. Unfortunately, I often can't think the way in some posts have been written. And then is the best to say nothing. Even now, I no longer understand what is actually being sought. How to comment or guess something, if don't understand anything.
I understand. Well I think all I quoted and underscored above is true and there's no standalone MSI installer, for the time being, who knows in the future.
It could be that there was at all no ready-made package from this version, ie neither the .exe nor even the .zip package, not speaking of .msi . I searched, found only source code and source code changes, but nothing else.