[imtringued]

You could have your cake and eat it too if languages with multiple GC heaps had become popular, as it is right now 99% of programming languages have one global heap and that means global pauses from which you cannot escape from. A lot of the time when someone wants to write real time code they just want that tiny little nugget to run without the GC, usually it can be confined to a single thread or maybe a separate pool of threads each with their own heaps while the rest of the application happily uses a global heap.

The fact that you haven't mentioned these low hanging fruit makes me feel like you haven't thought your argument through. You're advocating for a half baked solution even though there is a perfect solution that almost nobody tapped into that would make the GC superior almost everywhere. That's why you are wrong and why nobody should listen to you and people should listen to the creators of Erlang and Ponylang instead.