It literally does though. You can't make something as good as a Blender animation in Gmod because Gmod, and the source engine version it uses, doesn't have the same sort of tools as blender does since it was never made to do it.
Software absolutely has EVERYTHING to do with the quality of animation, because if software doesn't have X,Y, or Z, tool to do something, you wont have the same quality as if made in software that does. Obviously you can fuck up things in Blender(no one ever said otherwise so this whole comment is a strawman from the get go),, but Blender easily allows for much higher quality animations compared to SFM because it was made for it, and has tools to do it SFM doesn't.
this part of your posts just contradicts your first part
>software doesn't matter!
>but because other artists used blender which had all these extra control their videos look better
So software does matter?
I haven't posted here in a long time but this post was so dumb, and contradictory, it made me.