I bought your mouse, plugged it in, and ran the tests. Just like every other mouse in that video. This is how most people use a gaming mouse. I mentioned this.
I'll buy and test your new 4K model for future tests.
A large channel, Optimum Tech, covered the ULX and their XLAT tool which measures click latency.
This channel shows the LAMZU Atlantis having 15ms of click latency, which we believe is not transparent on how he did the test, very possible that he didn't set debounce time to 0ms.