derekullo :
A solid block of concrete is more secure than a combination lock.
By blocking all possible programs from interacting with the game you reduce the attack surface that others with more nefarious purposes may try to attack.
You also don't need to constantly update your detection algorithm to determine what is a legit MSI afterburner and what is an auto headshot / infinite money hack trying to disguise itself as MSI afterburner.
Are there that many "fake" versions of MSI Afterburner out there that would really cause this problem? Considering that the best method of actually submitting
evidence of the use of hacks (other than shrilly screaming it out just because the other player is better than you are in the game) would be to submit
actual in-game screenshots & recordings, it doesn't seem like it's going to make it
harder to prove cheating.
Not to mention it'll make it that much harder for review sites to actually measure the in-game performance...unless that's the real purpose behind this ("Oh, don't worry about using the tools you use to test every other game out there, we have our own built-in tool that you can trust 100%...believe us...").