We appreciate the efforts put in the video, but please keep in mind that TYM is for the most part a competitive forum and most of us expects reliable tips/combos/setups etc;;; that can be used in tournaments.
I've been on TYM for a while now and I can guarantee you that these reactions are harsh because you post your own thread (while there's a combo dedicated thread) as THE Captain Cold combo/setups video while most of these wouldn't work on 99.9% (if not 100%) of the members. And even if the setups/combos were reliables, they aren't representative because the gear isn't turned off.
You're allowed and encouraged to post your own videos, even if it's not the best combos. If you made a video but better combos were already found, the members will help you to learn the most optimal combos. But remember that when you post something, stay humble and ask what they think about your stuff. Don't claim that you video is "god tier stuff" because if it's not the case, people that already know this "tech" or know better than you will be kinda pissed.
I'm not a Captain Cold player, and not even a "good" player compared to most of the members here, I just watch tech forums of all chars because I like when a competitive video game is analysed to the core, but I can guarantee you that this video isn't viable at all. Even if I don't agree with most of the reactions, I understand what they mean.