penguin32888 Skywars Fly Hacks

I was playing skywars with my friends and when I joined the lobby, penguin3288 was saying I fly hacked and that he had proof. But the thing is....I don't hack and he does. Here is the proof.
Ingame name: BlockMaster748
Ingame name of hacker/ddoser: penguin32888
Server hacker/ddoser is on: skywars
Proof of hacking/ddosing: screenshots.
Any extra things you want to add: He was claiming players hack with no proof.