Played a few matches with it post 9.18. It didn't actually get any better, but it has better matchmaking (never seeing tier 10s again and no more than three tier 9s max) and its fellow tier 7 lights are no longer massively more powerful than it. It rather felt, dare I say, useful again. I am tentatively upgrading it from "Awful garbage do not buy" to "If you're willing to accept some tradeoffs and perhaps some small net nerfs from the WZ-131, this might be your thing."
The real winner is the AMX 13 57, though, having gotten better matchmaking, better gun handling, and a vstab. They scare