Because of scrolling on Thinkpad keyboards (using the middle click), I had to turn that feature of every time, especially while working on longer documents I would otherwise accidentally paste stuff at random places.
(It's not just macOS.)
From where I sit I have 5 Thinkpads set up within reach, and I have a few more in other rooms. They are by far my preferred laptop.
Most run Ubuntu as their default OS, most have the trackpad disabled because I usually use the trackpoint for everything, and on all of them I use middle-click to paste extensively.
The accidental pasting definitely kept happening to me, likely due to my bad habit of highlighting sections while to focus on them.
I only use the touchpad, but knowing where it is I can avoid it and almost never trigger it accidentally. It can also be disabled without affecting two-finger and three-finger tap, which I do use.
(This applies to all laptops, not just Thinkpads)
Er, no. As I said:
Usually I leave the trackpad disabled. I don't like gestures and multi-finger taps much so I prefer to just turn it off.