Hi! I know I haven’t posted in this topic before, and this might not be helpful (since I didn’t use the tutorial’s method), but I went ahead and exported your character using my technique. I saved each part separately, then used this Blender Animations plugin to also export the R6 rig. I assigned all parts to bones so the character can be posed in Blender, too.
itsVoidcrusher_Blender.blend (574.7 KB)
If you wanted to use a different outfit, I can make another .blend file using that instead; This didn’t take long to make.
Again, I know this isn’t quite what you requested (just the .obj export) but that would be stuck in the default R6 “I-pose” unless you posed then anchored the character model then uploaded that as an RBXM/RBXL file. I’d happily export that for you, though.