I'm looking at the Update Manager (I'm using Linux Mint 22 now, but I've seen this in all earlier versions I tried) and I see straightforward things, like an update to Timeshift, which is 807kB, and also the notes to what have been changed.
But every time I check the Update Manager I also see org.gnome.Platform that downloads 750+MB of data with no information on what it is (a Flatpack runtime package) and what the specific changes are. Things not always stop after allowing it to update, as sometimes I get some more updates coming through afterwards specific to my cpu architecture, like org.gnome.Platform.Compat.i386.
What is that thing for, why can't I see the changelog, and isn't there a more efficient way to update the underlying parts instead of having to re-download everything every time?
I already added this to the blacklist in the update manager so that it doesn't get updated daily, but I'm curious to know a bit more about it.