Cancel culture is becoming a big thing.
I agree with some of what you are stating - some of this has gotten out of hand. I do think the original premise of this is a bit more than political correctness, I think it is more of being kind and considerate of others and having some sensitivity of someone that may be different than you are and understanding as a result some things you may deem as harmless or funny can actually be hurtful. So I do think this came out of a good place, however, I think often times it is carried forward and having the effect that is the opposite of what one should be trying to do.
I know that is long winded so I mean in the cases where people jump on the bandwagon because it appears a person is doing/saying /representing something that is hurtful - so they "cancel" and shame them on social media - then only to find out this is completely false or over exaggerated so this person is now harmed often times to the point of physical and deadly threats, losing jobs, being harrassed and so forth.
Here is a recent example there was a man on Jeopardy
On one show, Donohue held up three fingers, he says to signify the three games he had won on “Jeopardy!” heading into the match; similar to previous shows where he held up one finger following his first win on Friday’s show and two fingers at the start of Monday’s episode.
Some people online, however, believed that Donohue’s symbol resembled the “Okay” hand gesture. The gesture started as an inside joke on online imageboard 4chan to troll liberals and mainstream media into believing the gesture was a hate symbol but was later co-opted by white supremacists to actually symbolize white power.
entire article https://www.boston.com/culture/entertainment/2021/04/29/kelly-donohue-jeopardy-hand-gesture
This is the part of the so-called cancel culture that is out of hand. You can possibly destroy someone's life without even being correct. So in a sense this cancel culture is actually doing the one thing that this culture is supposed to be about stopping harm and hurtful things.