Whedon's behaviour was terrible and nasty but if it wasn't criminal then he can't really be punished for something he did 20 years ago.
This information will affect how people view Whedon from this point on, however he shouldn't be "cancelled" over the CC incidents.
I know it's an unpopular opinion, but if you start opening the door to retractive retribution then you start down a slippery slope where any past bad behaviour can be used to destroy someone's life. To clarify, I'm not talking about criminal behaviour, if someone commits a crime then they should be punished for it no matter how much time has passed, but Whedon being a bad boss 20 years ago on a show he was in charge of shouldn't be used to destroy his opportunity of running a show in the future. If people decide they don't want to watch a Whedon show, or an actor/actress decides they don't want to work on a Whedon project, that is up to them as an individual. However to decide that he should never work again because he was extremely mean to CC 20 years ago is wrong.
CC's experience should be treated as separate from Fisher's allegations. Just because Whedon is guilty of one doesn't automatically make him guilty of the other. Fisher's narrative was one of racism, the article with CC's story tried to change the Fisher narrative to one of unprofessionalism and abusive behaviour which was not the original narrative.
I think what
@The Bronze means is that in the tv industry, there are a lot of moving parts and the whole system has to work in synch, when something gets thrown off, it creates a ripple effect which affects all those moving parts. For example, you have script, costume, and stunts. The script writers create the script, the costume department create the costumes required in that script and the stunt people train and co-ordinate their stunts for that script. Those people are investing their time and effort in bringing that particular script to life and the studio are paying them to do so. That script is created under certain assumptions eg nobody is pregnant, everybody is available. They have a set amount of time to film that script, so whilst they might be able to move the schedule around such as someone was supposed to film on the Monday but is sick so those scenes have been pushed back to Wednesday and Tuesday's scenes have been brought forward etc, there are no major changes to that. Also several episodes are prepped ahead of time, so episode 1 might be being filmed but scripts have already been written up to episode 5, costumes prepared etc. Pregnancy throws a spanner in the works. Scripts have to be rewritten because the character can't be as physical due to the actress' condition eg they can't be throwing her around the place, costumes will have to be altered to accommodate the actress' change of size, stunts will have to be redone because they can no longer use the choreography they had prepared and all those changes will need to be paid for as well as there now being a smaller time window to actually film them. If the pregnancy is announced well ahead of time, then those changes can be incorporated within the initial script process before prep work takes place on stunts and costumes, meaning there is little to no disruption. However, if the pregnancy isn't announced until much later after all that prep work is done then it creates a lot of extra work for people who are now under a time pressure.
The story of when CC announced her pregnancy varies from she tried to do it as early as possible to she left it last minute. Also it's possible that the timing was bad and it was always going to cause issues because it was slap bang in the middle of the production process. Joss threw a tantrum and got petty and decided to "punish" CC via the character assassination of Cordy via the script rewrites. Alfred Hitchcock is considered a great filmmaker but was an absolute nightmare to work for. The actress in The Birds suffered under him, as did the actress in The Shining under Kubrick, yet the kid in that film had a whale of a time and didn't even realise he was making a horror movie.