Honestly, it looks like he's had a lot of practice. I doubt tHmCS would cheat.
What if I told you I've played counter-strike for more than 8 years, while optimizing every little movement for the entirety of that 20 second speedrun. Not that rank in mm matters, but I myself am global, have been basically since CS:GO started introducing matchmaking.
The only reason why I left the leaderboards is because I dont want the drama. It's not worth it. It requires a lot of patience, a lot of luck and a whole lot of skill to perform that weapons course run.
Have a nice day.
A single person with an argument that your run is cheated, is drama, and enough to peace out?
You probably shouldn't join online communities in the first place if one person saying one thing against you is the final straw.
One person can trigger a riot of drama. Especially in a community where the times are extremely close.
Heading up activities for a video game community is a lot of work, that could be used playing video games instead.
If the other players are appreciative and helpful it's worth it. If the other players start making wild, baseless accusations against you, I can definitely see flipping them off and walking out the door.