[2020] Anyone notice the Leaderboards have two hackers at the top?

I just looked at the leaderboards for Summer 2020 and there's a new name NotExIIL, who has sub 1 second times on every track. I might not be the most experienced trackmania player but I'm confidently certain that you can't complete any of the Summer 2020 tracks in under 1 second.

Perhaps less obviously, theres a second hacker G-ReM87 who has good times on every single track, but beats the next best time by 2-5 seconds on every track. If I googled them and any videos at all came up to show their amazing runs, I'd believe it. But the fact that there are 0 google search results for their name and the fact that they're undercutting the next best time by 3 seconds on a global scale for every map just isn't believable.

Does Nadeo enforce these leaderboards? will they remove those times?