By default Gnome doesn’t let you choose any fractional scaling in the UI because it has some remaining TODOs on that front. So from the UI you choose 100% or 200%. But the code is there and it works if you just open a terminal and type a command to enable this “experimental” feature.

Now whether or not this feature should have remained experimental is a different debate. I personally find that similar to the fact that Gmail has labeled itself beta for many years.

I've got the feature turned on. But Gnome 49 only supports fractional scaling ratios that divide your display into a whole, integer number of pixels. And they only calculate candidate ratios by dividing your resolution up to a denominator of 4.

So on my Framework 13, I no longer have the 150% option. I can pick 133%, double, or triple. 160% would be great, but that requires a denominator of 5, which Gnome doesn't evaluate. And you can't define your own values in monitors.xml anymore.

Gmail labeled itself beta for many years (past tense). Not “has labeled” which would imply it is still doing so.