@Jakofff-Parker sorry for the 2 month delay, must have missed a notification here!
The answer is yes.
The p44-ledchain module does not depend on many kernel internals, the only subsystem it actually uses is hrtimer (high resolution timers), so it should run on any not really ancient kernel version.
On the other hand, it strictly limited to the MT7688 SoC, as it directly uses the PWM hardware without any abstraction. So it's good for Omega2/2S, LinkItSmart and possibly HLK7688.