"It feels a bit like this is Apple letting the 13" drift apart from the 16" into separate arenas."
Professional Graphics cards, like the ones in the 16", probably do not fit in the available space of a 13" MacBook Pro. So until now, it is not possible fit snug and powerful into one machine.
Just start with the first simple software at hand. Only after you have made your experiences your self, you'll know what to look for next.
It is not the software that determines the quality of the edit, it's the editor.
Fairlight is activated through the bottom menu, not through the Fairlight button above.
Audio - Fairlight is greyed out on my Windows 14 beta. A pity.
I use a Wacom tablet to mask in Mocha. I bought that after serious RSI related problems. It turned out to be a pleasant way of working, healthy too.
Flaat was a nice suggestion. From there I found https://nikonpc.com/, there you can make your own profiles. I am going to dig my D7000 out of the dust ; ) to try a "high roll off" profile just made.