No, I don't think "lack of tactile feedback" is, by itself, sufficient to demonstrate that touchscreens are a bad idea for laptops. There's nothing I can see about laptops that make the lack of tactile feedback a bigger concern than it is for other devices.
Lack of tactile feedback might be a bigger problem on laptops, but the reason it's a bigger problem is not self evident.
> here's nothing I can see about laptops that make the lack of tactile feedback a bigger concern than it is for other devices.
Agreed, there's nothing about it that makes it a bigger concern for a laptop than other devices. Touchscreens as inputs are suboptimal on other devices too. They're uncomfortable, slow, and imprecise.
I'm a huge fan of physical buttons. Sadly, it's impractical to have a phone with a screen large enough to be useful, thin enough to fit nicely in a pocket, and have it equipped with decent input.
Lack of tactile feedback might be a bigger problem on laptops, but the reason it's a bigger problem is not self evident.