It's ideal for 'wordy' languages such as C++ where a typical line length can often go over 150 characters, and then you don't have to scroll sideways.
Maple has many ligatures, I personally like the hypervisible [TODO]. Overall I find it very legible, even on small sizes, and pleasing also for writing e.g. in Markdown.
[1] https://font.subf.dev/en/ / https://github.com/subframe7536/maple-font
The ligatures for keywords is clever. I appreciate those niceties. Like rendering small gaps in large numbers, eg '1000000' looks like '1 000 000'.
IIRC Berkeley or Monospaced have a few neat tricks like that.