And what should stop me from doing 51% attack on old C2 blockchain again?
No limit to human stupidity.
Your stupidity perhaps ? I think this is your brain those getting 51% ....
Have you found an exploit ? No you used know tricks to rip off some coins.
Does we need to call you a guru or an hacker ? Of course not ... just a script kiddy boy frustrated behind his keyboard.
why not posting your real name as anyway you are just a "stealer" ... the only good thing is your nickname used as Hockey player, and funny name with Slovakian origin.