I've drifted several laps of blackwood without burning the clutch, and I am not talking about feints either - power-on drifting here... Its not hard at all, the thing I could semi-agree with is the tires heating up quickly - so put max pressure and use the highest temperature compound you can. I haven't had any problems with the clutch, only the tires - but in real life drifting EATS tires faster then you can say whoops... If you notice cars take breaks during drifting sessions, this allows the tires to cool back down...
Also some tips with the clutch- since a lot of people seems to need some tips:
1) Make sure your foot is released off the clutch when driving. DON'T leave your foot resting on or near the clutch.
2) After disengaging the clutch quickly do NOT slam your foot on the gas - the clutch hasn't had a chance to stop slipping. This is the main problem I would bet. So let the clutch grip then apply more throttle. There is a distinct sound when your clutch is slipping because the engine RPM's are moving faster then your tire RPMs. Do NOT confuse this with your wheels spinning, cause it may be your clutch slipping!
3) After shifting up or down (even using auto clutch) be sure the clutch is engaged before applying the throttle...
4) And during a clutch kick to boost your engine RPM's you need to allow the clutch to grip again - this will eat your clutch if you do it wrong. However properly done its fine - I use it when needed. So do the normal clutch kick, with your foot on the throttle, then *just* after releasing the clutch your wheels will start spinning, and essentially sliding. At this point release the throttle a bit, let the clutch grip and apply the throttle again. That may seem to make the clutch kick pointless but then your mis understanding the point of the clutch-kick as the above description still gets the car sliding... A lot of people have the tendency to leave their foot on the gas and never let the clutch properly grip therefor burning it up quickly!
Tips two, three and four are all the same thing in different cases!
Lastly - all of that is coming from a racer, who does enjoy drifting from time to time just to learn the balance of the car. I am trying to help you guys out because the clutch is perfectly fine - you need to use it correctly though. And in real life beating on your car costs money. Drifting is very harmful to engines and transmissions, including the clutch when done improperly.