Rule won't be removed due to a number of reasons:
- Deals that happen on forums are always supported (either fully or partially in case of TC sales). That won't be the case with other games or services.
- Such deals are almost always against terms of service of those games. Even if that's not the case at this moment, tos tend to get updated from time to time (especially when it comes to large games) - so essentially we'll need to keep an eye on all those games' tos every time a new thread is posted, which will be an unnecessary workload for MS.
If you want to trade CSGO skins to TC, do it via PMs / discord / teamspeak / grandma's cell phone / whatever you want to use that isn't forum threads or Toribash chat.
You get scammed in process, we won't care.