Sorry Charles, but I cannot agree with that.
The Speed editor is clearly intended (and for the most part does) work with the Edit page. It isn't an "accident" that most of the functions work - and quite well too.
There are some "rough edges" still, which is to be expected as it is a new product working with beta software.
The split issue sounds like an anomaly that should be reported as a bug. I have also seen some weird behaviour when applying transitions at the ends of timelines. Track "auto select" does not work consistently.
There are also some issues in the cut page that need to be ironed out (inconsistent rippling behaviour, secondary sorting of bins...)
I do agree that these will get fixed.
Windows 11 laptop. Intel i7-10750H, 32GB RAM, Nvidia 4070 ti Super eGPU, SSD disks. Resolve Studio (latest)