Let's settle things down abit and look at the facts. Bayonetta isn't as broken as Meta Knight, but she still is a good Character. Her Combos lead to deadly 0 to deaths, even with DI (Thanks MySmashCorner) and she has no risk for doing them. If she misses the Downward side B, the grounded hitbox is still enough that you have to wait for the animation to basically be done. Her Up B is what make the Combos go so high, and if she launches you far enough, she can land without any sort of punishment for the long combo whatsoever. Why people want her banned is not for how strong she it, but how she poisons the community.
In ZeRos video, he tells us about a player in Japan, who picked up Bayo, used her for one week, then went on to win a major event in Japan. No other character is like that. Now what does this mean? It means this character carries the player, by giving to player fast, risk free options that come with little to no punishment for missing of failing them. It doesn't take much work to be good with this character, cause she is carrying you. This in a way poisons the players, and makes the game less fun for them. If your opponent doesn't have to try that hard to win, and doesn't put in the effort to win, then why should you? It makes the game less fun, cause you know if you make one mistake, get read once and get Witch Timed, your done, and all you can do it hope your DI saves you. I have watched many videos on tournaments by MVG, and almost always see Saj, a Bayonetta player, be in grand finals.
And for you Bayo mains out there that say she isn't a problem, think again. Professional players and many other people disagree. You are very oblivious to your characters strengths and you only know her weaknesses. I know her strengths, and they definitely outweigh her weaknesses. If you say to "get gud" or "just adapt", do keep in mind that as we adapt, so will Bayonetta mains. Styles can easily change, and I hope, if anything, your character gets nerfed to bottom tier, so she won't be a problem anymore. For the community, and for the Competitive scene. Hate if you will, but results in tournament definitely say your character is better than you think.