You didn't even read the article you linked! It was from the Independent for a start.
Which was this Call to review ‘cancel culture’ in universities after ‘ostracised’ Oxford student takes own life | The Independent
Where it clearly states that Oxford University employed an independent consultant to investigate 'cancel culture' at the University who concluded there had been a "'pile-on effect' of students agreeing with others because of an "unwritten" moral imperative to "do the right thing" and Oxford had called in an independent Consultant because of previous incidents like this.
It is 'cancel culture' if a bunch of students attending a University, or employees of a company or organisation arrange some kind of meeting to confront someone with allegations that the person who tells them something discomforting happened has no intention to formally report and have investigated.
And the outcome is that that person is told despite not having the allegations heard and investigated formally with some kind of due process, is now judged to have done something wrong and is meant to wait until people decide whether they want to be friends with them or not but in the mean-time, the social imperative for everyone around them is they can't be seen to be friends with them, doubting or questioning the allegations, or seen to be supporting them in any way otherwise they also risk ostracisation.
That's why Oxford Uni wanted an independent Consultant to investigate 'cancel culture', because it wasn't about people being allowed to decide who they're friends with, which of course they are. But that the 'cancel culture' meant people were not allowed to decide anything, people are being tried by their peers without any kind of actual investigation and anyone going against that was risking also being ostracised.
'Cancel culture' isn't people being rightfully shunned or shamed for wrong doing, it's people being shunned or shamed because of something they might or might not have been done, and the peer pressure is that everyone else needs to be seen to be doing 'the right thing' by going along with it.
Oh. and i'm not 'offended', i'm correcting you and pointing out that making things up to "pile-on" a dead young man when it's already been stated that kind of behaviour may have contributed to his death isn't a good look.
Hope that helps.