Thanks so much for sharing! I've been using this very good boy for testing out a GLTF loader I'm working on for GameMaker Studio.
Just a heads up, the included .glb does not include valid texture data. It looks like the material shader in the .blend file uses a Diffuse BSDF which is not supported by Blender's GLTF export (it just silently fails and generates the material without the actual texture attached). Thankfully, the fix is simple: open up the material shader, replace the Diffuse BSDF with a Principled BSDF, rewire the inputs/outputs, and export a new GLTF.
Side note, I'm having trouble parsing out the animations but I'm certain that's an issue with my code, not the actual files (edit: it was the file, see reply below). Only sharing because I think this is equally hilarious and terrifying:
