What is your authoring tool for SVG?

The SVG code is well written. It is neither Adobe bloat-spam-slop and neither is it overly SVGOMG'd.

For picky SVG people you could have some easy way to present the code. Only a minority value quality SVG, artworkers do not look at SVG code and coders just see SVG as 'assets' from the artworker. SVG therefore has not evolved to a full art form.