NosHyena (@NosHyena) is coming out against Kero on Twitter now. He has a ton of reiterated info across many Tweets, and even some manually reproduced evidence. He has a decent video up now showing Kero's Telegram ID match some damning forwarded messages, which should help sway some stubborn people. For context, his following is approximately equal to Kero's, with a ton of crossover. This could help end a lot of denial by younger "I can't believe it, it must be server side Telegram hacks!" types of people.
They need to understand that while anything can be hacked, this is the equivalent of gaining control of an entire power grid to turn off a light bulb.