I would also like to add, it is a lack of hakoras hatov to decide a person doesn’t have the right intentions when shoveling the snow in front of their property. And right intentions or not, we must have hakoras hatov to those who do shovel.
I absolutely agree with that (especially since I either shovel my sidewalk or have someone do it for me).
My issue is with those who don’t look at it as something that deserves hakaras hatov, but rather, look at someone who doesn’t shovel as a total “ferd”.