We will never see a touchscreen Mac. Apple has made this clear over and over. Whenever one of its executives is asked about a touchscreen Mac in an interview, the answer is always the same: macOS is for trackpads, and iPadOS for is for touch. Combining them would compromise both.
I agree. While I do catch myself tapping the Mac’s screen from time to time, there’s no way I’d want the Mac redesigned for touch. For one thing, you’d lose all the accuracy of the mouse, because clicking targets would have to be big enough for your fingers. But it doesn’t matter, because Apple has already made a touch option for the Mac. It’s Sidecar, and it’s amazing.