[zamadatix]

The 4.6 is telling you it's great for being less than 100 dollars not that it's a great overall. Few options in the 100 dollar space are going to give you OS updates for years but every single one will have crap hardware.

As for other places it has a 4.5 or higher at every place I see on Google shopping including target and best buy.

You wouldn't rate a McDonald's a 1 star because it was shit compared to the steakhouse down the street you'd rate it based on how it performed against similar competition.