They can ban them from the forums of the franchise and if you get this style of ban you can also lose access to uploading things on the workshop. So a prolific modder gets banned in this manner, it could basically mean the mod are static/dead (ignoring the ban may just already kill the enthusiasm for modding for said game)
By “remove players” I assume they mean “remove the forum posts”, do they even have the power to ban someone on Steam’s forums?
They can ban them from the forums of the franchise and if you get this style of ban you can also lose access to uploading things on the workshop. So a prolific modder gets banned in this manner, it could basically mean the mod are static/dead (ignoring the ban may just already kill the enthusiasm for modding for said game)
I think they can in their own game forum, but not universally