I think with the usage of this bug, we have to think about which runs it would be acceptable to do this in.
Obviously, in 100% runs of games, such as VIP, smw and sdw, we could return to previous levels containing Clapping or Bouncing chucks to gain a key in reserve or a goal point in reserve to be used. I don't think this should be the case even as a seperate category.
In any% runs of hacks, the goal of course is both speed but mostly entertainment. In this case, I think the bug should be avoided. For example, we
found a way to shorten tsrp2 by many, many levels. In this circumstance, the run becomes very short, and the only entertainment comes from the performance of the TASer in the other levels.
So I think this bug should be excluded from both 100% runs and even any% runs of hacks. Never before in SMW have we had a bug like this whereby much of the game's content can be skipped, and considering it can be abused ad infinitum, it should be avoided.
I do, however, think that if the bug could be exploited in smw any%, then it should be done. My reasoning for this is that smw any% is the one run whereby entertainment can be traded off for speed; its intention is to show the game pushed to its limits.
I'm wondering what others think about this grey area. Perhaps it is arbitrary to exclude a bug because "it's too powerful".