Not a fan, I have tried say formatting a large JSON API results (with no formatting) and it just runs out of memory because:
1) the string is huge like 64mb+
2) it tries to do syntax highlighting and blows up big time on the resulting formatted value.
For a utility tool it's awful finnicky on real world data and I think tries to be pretty at times rather than useful, or perhaps a case where a browser makes a poor Editor.