What's wrong in the world of notation softwares?

You guess wrong. I have hardly any use for a pro score editor bundled with a DAW. Unless the DAW was genuinely “free” (i.e. not just a bump to the package price) and totally transparent (in the sense that I could get playback for audio proof reading by doing literally NOTHING) it would usually just be an added expense and a time-waster.

And a DAW which comes with a “free” (in marketing-speak!) lightweight sound library that has standard orchestral instruments missing means spending yet more money on a different library, of course…

So far as I’m concerned, Dorico says “Notation program” on the box, and the only thing I want is that it does what it says on the box - so long as it does it very very well, of course!