So, uh, no? In fact within the “human spectrum” you generally care at least somewhat about every tick of the number. So it’s actually more useful for people.
Because I doubt you can feel the difference between 71f and 72f. But it’s possible to notice the difference between 21 and 22, although you’re pretty picky if you do.
Not true on my Sony experia, in Finland. So I am thinking that instead of adjusting the settings for alerts, maybe check settings of the store itself? The play store app, like this screen? Maybe. Dunno if that’s the difference here.