Kernel mode anticheat software is something of a divisive topic. Many players believe it negatively impacts their games' performance and could potentially compromise their system's security; but many players also want something done about all the unscrupulous players, and broadly speaking, kernel-level anticheat is the most effective way to keep things clean. It is, as they say, a conundrum.
A new addition to Steam won't change any of the above, but it will at least make it easier for people...