I’ve been using it as my only EDA the last three years or so, and I can tell you it is much better than it was eleven-ish years go, and each major version has been better than the last. I have some plugins that have been broken for a couple major versions if I recall, which kind of sucks. Some functions still aren’t offered - thus the plugins. I make extensive use of the 3D models, and often export to FreeCAD for enclosure design. FreeCAD’s UX is worse than KiCAD’s UX.
Windows accessing my other Windows installation’s files corrupted my filesystem, how does that factor in?