No, you’re clearly not understanding basic probability,
There is not a chance in the world that I got TWO HH mounts in 2 days, a mount that has 0.1% drop chance.
There is no chance that 10+ guildies of mine got it in a span of 3 days.
There is no chance that 1 guy got it 3 times in my guild.
The odds are of getting HH mount THREE times is 0.1x0.1x0.1 = 0.001%.
This tread alone:
And people in 2010 saying the same thing
https://www.mmo-champion.com/threads/777961-So-what-are-your-chances-of-actually-GETTING-the-Headless-Horseman-s-Reins/page3