Ubuntu fonts: ‘Ubuntu’ and ‘Ubuntu Sans’

Ok, so creating a new user (25.04) uses Ubuntu Sans * fonts.
The default size is 11 (UI) and 13 (mono).
It causes on my display the U of Ubuntu an height:

  • UI : 10px;
  • mono: 12px.

So why are we keeping these default settings? Is it intended to have bigger mono fonts than UI?

Why are we keeping the old non-Sans versions of Ubuntu fonts? All these different Ubuntu fonts are installed by the same usual fonts-ubuntu package:

/usr/share/fonts/truetype/ubuntu/Ubuntu-B.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-BI.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-C.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-Italic[wdth,wght].ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-L.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-LI.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-M.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-MI.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-R.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-RI.ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu-Th.ttf
/usr/share/fonts/truetype/ubuntu/UbuntuMono-B.ttf
/usr/share/fonts/truetype/ubuntu/UbuntuMono-BI.ttf
/usr/share/fonts/truetype/ubuntu/UbuntuMono-Italic[wght].ttf
/usr/share/fonts/truetype/ubuntu/UbuntuMono-R.ttf
/usr/share/fonts/truetype/ubuntu/UbuntuMono-RI.ttf
/usr/share/fonts/truetype/ubuntu/UbuntuMono[wght].ttf
/usr/share/fonts/truetype/ubuntu/UbuntuSans-Italic[wdth,wght].ttf
/usr/share/fonts/truetype/ubuntu/UbuntuSansMono-Italic[wght].ttf
/usr/share/fonts/truetype/ubuntu/UbuntuSansMono[wght].ttf
/usr/share/fonts/truetype/ubuntu/UbuntuSans[wdth,wght].ttf
/usr/share/fonts/truetype/ubuntu/Ubuntu[wdth,wght].ttf