Deciding which third party tool is fine and which isnt requires thought and effort by SE. Sure some examples are obviously going to be fine like voip programs, others like the pvp scripts obviously shouldnt be. But there it's not going to be clear on all of them.

Ultimately this discussion fails to adress the actual problem. Why is ACT officially not allowed and never will be? Because toxic people cant be trusted with it. The only thing they cared about so far was if it was used to harass people and while that does ignore gathering bots and most pvp cheaters, it's not the worst approach. If a third party tool is in reality harmless, why should SE care about the rules? Debate lords love nothing more than parroting around rules as if they were some divine enlightement but that is actually not a smart way of handling things. You need to follow the spirit of the law, not necessarily the letter. And that has been 'dont harass people with third party tools'. Many streamers followed the spirit of the law and when they didnt, they already got suspensions.