in fact, ISTM it's not even necessary to search the entire 32-bit number space?! surely it's possible to feed unix-timestamps since the 2015 date/time when the PR was merged into some common c++ mersenne_twister implementations to find every seed generated with the insecure code. either way, it's very surprising that it's taken 7 years for anyone to notice
That gives 220,752,000 possible seeds if we take exactly 7 years, otherwise a little more or less. Either way, it's something that even a Pentium 4 can brute force.
They clearly did a bad job explaining that this command is not intended for real-world usage.