I see where your coming from
Look at it this way. You can set a car up with crappy suspension and tyres... It will get sideways nice and easy, but try keeping it there without spinning. For a underpowered car, thats the perfect way to go..
For the faster drifters with lots of power, they want to enter at much faster speeds, and need the grip to avoid spinning, and to allow them to put the power down to create smoke, once again without spinning
I'm no pro, but thats just what I have noticed