This is right.
Apple Pencil 2 requires a slab-sided design like the 2018-2020 iPad Pros and the 4th Gen. iPad Air. If the Mini 6 sticks with a design like the Mini 5, there is literally no edge adequately flat to stick a magnetic Pencil 2 on it.
In addition, a Mini 6 based on the design language of the Air 3 will have a lightning port, which is how the 1st gen Apple Pencil charges.
What a damn shame. Nobody wants the 1st gen Apple Pencil.
I’m actually pretty pissed about this Mini 6 news, and am considering not buying it, even though I have saved up for it and am still reading on a bog-slow Mini 2. I own a 2020 12.9” Pro, and was hoping to use the same Apple Pencil 2 on a Mini as well. No way in hell I’m gonna buy a second, inferior 1st gen Apple Pencil to use on a Mini.