Sorry but I disagree with you here.
The mx-5 isn't exactly tail happy (compare reputation with my old mr2!) and yet the forums are full of n00bs that have left the road backwards. You basically never hear about this from most FWD hot-hatch types bar the odd few with strange suspension setups like the 306 which tended to be pretty oversteery thanks to the rear suspension setup.
RWD is a lot easier to get wrong, both in my experience from trying to provoke these things and also from looking around at how many powerful lightweight RWD cars end up broken due to oversteer...
But an Mx-5 isn't a VX220. If you were comparing the Mx-5 with a 182 I might agree with you.