The second-last comment on that issue is pretty clear: The issue with the lib is its non-treeshakeable nature. It should be rewritten using ES6 modules. That

The second-last comment on that issue is pretty clear: The issue with the lib is its non-treeshakeable nature. It should be rewritten using ES6 modules. That doesn't seem so hard, unless I'm missing something. Certainly shouldn't need a full rewrite from scratch. My point is, it's not just about bloat and having too many features (which are very hard problems to fix); it's often low-hanging fruit that isn't being picked.