I don’t really see the point of such laptop.

Most prototyping can be performed on a potato. Training complex models takes hours/days which seems incompatible with laptop usage : mobility.

I would personally buy $3000 of desktop/server, $300 refurbished thinkpad/dell and put the rest in a screen, keyboard, etc.

Those laptop will probably be bought buy companies to give their “data scientist” nice toy to play with.