The way this wall cheat is different, is with when people apply it.
When qualifying for the fastest lap, anything goes. Everyone is able to do the same thing the #1 time did, if you choose not to, you're only putting yourself at a deliberate disadvantage, instead of adapting or dropping out of participation.
Anything the game allows will be abused, it is inevitable, it's how people are, and the game enables it...
However, in a race, if there's only one person not hitting the wall, then everyone else is the cheater. So like I said in one of my first posts on the subject, it's easier to agree to not use the wall in a race. Some good racing is to be had if everyone can agree on it and be sporting about it.
I met one racer, who also cheated the time, but raced fairly, within the real life rules. He complained about the wall cheat before the race, but carried on. As have many others. Those who use the wall in a race, get dealt with by other racers. If the game won't apply a penalty...the current (lack thereof of a) penalty system allows everyone to be a rule enforcer, to an extent... The old system was better, at least the dirty drivers were all racing other dirty drivers but now they're all up in the S-ranked lobbies and it's utter chaos.
Realistically, comparing this situation to real life is ridiculous. Of course you'd never do something like that unless you have a death wish, or (in case of corner cutting) are prepared to, worst case scenario, pay a massive fine and shame yourself and the nation...