The thing is, if in real life you got the opportunity to use this in a racing situation you would. But the thing is the fast drivers will still be ahead even if you limited it so you can't really hate on the guys for using the track to its full and maximum potential.
I mean in fairness everyone goes to the limits of the rules just a few more random race scenarios I've remembered;
V8 Supercars (At hamilton I think it was) you had 5 chances (As sometimes depending on the situation you might accidently do this) at straight lining the chicane, so the last few laps some drivers had only used 2 so they purposefully abused the line so they gained more speed.
F1 at Bahrain may have been a slightly different circumstance, but Lewis going onto the; what you would think is sand, but was actually a hard surface overtaking rosberg (Only because rosberg pushed him there) but even so thats knowledge of track limits, grip and design.
You'll use the limits your allowed, in real life or a virtual environment so you can't hate on the players for using the limits of the tracks. You get out of the game what you want to. Similarly for me round 2-5 I won't be bashing into cars but I'll still be happy with improving my times, I'm not going to hate on the guys at the top I disagree with it but you play it how you want to.
I can pretty much bet Round 8-5 will have had a thorough looking over after what happened with the US GT Academy, and any other complaints made about the EU one (When the top guys were using 2 wheels on the grass in parts just to reduce corner angle by that little bit further).
So just enjoy the academy as you like to play it
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