I'm not going to answer no to this topic, purely because I don't think it would make sense for Apple to introduce a new 'hybrid' device (for which the primary input is still a cursor; touch would be secondary), when they already have such a product with the iPad Pro + Magic Keyboard.
For the latter, that would seem like the biggest selling point to me - the ability to use the device in both contexts. Plus, with SideCar on the Mac, there's a further incentive to purchase an iPad as an accessory and use it as an extra display, drawing tablet etc.
Apple would also have to fragment their Mac line-up to accommodate the hardware that would be designed out-of-box for touch input (i.e. an MS Surface Studio clone) compared to, say, a Mac mini, or even the Pro Display XDR which is a relatively new product. It doesn't send a clear message.
Furthermore, although Big Sur employs the iOS design language, it's still not fundamentally designed to be touched regularly if the user so-wished. The Traffic Light buttons on windows, the Menu Bar, even the inconsistencies with sliders...
..it doesn't jump out to me "I wanted to be touched" like iOS does.