Update: I have just attempted to use exclusively Blender Source Tools to make an .obj out of a random .mdl and I got no materials yet again. So in fact I did send my question to the right place it seems.

No, I took a gamble and asked here because I thought that his add-on probably uses Blender Source Tools (since it's required for the add-on to work) to handle materials. Hoped maybe someone already had a similar issue here.

I have almost no clue what I'm doing so I'd appretiate if someone pointed me in the right direction. I used this https://github.com/lasa01/io_import_vmf/ to import a TF2 map into blender.
The result I need is to get an obj file to use it elswhere. No matter what I do, when I am trying to export an obj file from this blender project, I get the obj file itself, the mtl file with useless text where the material path should be, and no materials at all. Ideally what I want to achieve is an obj file, mtl with absolute or relative texture paths and a number of png images, those being the textures. Is there any easy way I can achieve this, or shold I give up on this idea?